diff --git a/install.sh b/install.sh
index f0c0978..d706709 100755
--- a/install.sh
+++ b/install.sh
@@ -27,6 +27,11 @@ source linux-tkg-config/prepare
 # Run init script that is also run in PKGBUILD, it will define some env vars that we will use
 _tkg_initscript
 
+if [[ "$_sub" = rc* ]]; then
+  # if an RC version, subver will always be 0
+  _kernel_subver=0
+fi
+
 case "$_basever" in
 	"54")
 	opt_ver="4.19-v5.4"
@@ -40,6 +45,9 @@ case "$_basever" in
 	"59")
 	opt_ver="5.8%2B"
 	;;
+	"510")
+	opt_ver="5.8%2B"
+	;;
 esac
 
 _cpu_opt_patch_link="https://raw.githubusercontent.com/graysky2/kernel_gcc_patch/master/enable_additional_cpu_optimizations_for_gcc_v10.1%2B_kernel_v${opt_ver}.patch"  
@@ -118,40 +126,70 @@ if [ "$1" = "install" ] || [ "$1" = "config" ]; then
     _distro=""
   fi
 
-  if [ -d linux-${_basekernel}.orig ]; then
-    rm -rf linux-${_basekernel}.orig
-  fi
-
-  if [ -d linux-${_basekernel} ]; then
-    msg2 "Reseting files in linux-$_basekernel to their original state and getting latest updates"
-    cd "$_where"/linux-${_basekernel}
-    git checkout --force linux-$_basekernel.y
-    git clean -f -d -x
-    git pull
-    msg2 "Done" 
-    cd "$_where"
+  if [[ "$_sub" = rc* ]]; then
+    if [ -d linux-main.orig ]; then
+      rm -rf linux-main.orig
+    fi
+  
+    if [  -d linux-main ]; then
+      msg2 "Reseting files in linux-main to their original state and getting latest updates"
+      cd "$_where"/linux-main
+      git reset --hard HEAD
+      git clean -f -d -x
+      git checkout master
+      git pull
+      git checkout "v${_basekernel}-${_sub}"
+      msg2 "Done" 
+      cd "$_where"
+    else
+      msg2 "Shallow git cloning linux kernel master branch"
+      # Shallow clone the past 3 weeks
+      _clone_start_date=$(date -d "$(date +"%Y/%m/%d") - 21 day" +"%Y/%m/%d")
+      git clone --branch master --single-branch --shallow-since=$_clone_start_date https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git "$_where"/linux-main
+      cd "$_where"/linux-main
+      git checkout "v${_basekernel}-${_sub}"
+      msg2 "Done"
+    fi
   else
-    msg2 "Shallow git cloning linux $_basekernel"
-    git clone --branch linux-$_basekernel.y --single-branch --depth=1 https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git linux-${_basekernel}
-    msg2 "Done"
+    if [ -d linux-${_basekernel}.orig ]; then
+      rm -rf linux-${_basekernel}.orig
+    fi
+  
+    if [ -d linux-${_basekernel} ]; then
+      msg2 "Reseting files in linux-$_basekernel to their original state and getting latest updates"
+      cd "$_where"/linux-${_basekernel}
+      git checkout --force linux-$_basekernel.y
+      git clean -f -d -x
+      git pull
+      msg2 "Done" 
+      cd "$_where"
+    else
+      msg2 "Shallow git cloning linux $_basekernel"
+      git clone --branch linux-$_basekernel.y --single-branch --depth=1 https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git linux-${_basekernel}
+      msg2 "Done"
+    fi
+  
+    # Define current kernel subversion
+    if [ -z $_kernel_subver ]; then
+      cd "$_where"/linux-${_basekernel}
+      _kernelverstr=`git describe`
+      _kernel_subver=${_kernelverstr:5}
+    fi
   fi
-
-  # Define current kernel subversion
-  if [ -z $_kernel_subver ]; then
-    cd "$_where"/linux-${_basekernel}
-    _kernelverstr=`git describe`
-    _kernel_subver=${_kernelverstr:5}
-    cd "$_where"
-  fi
-
+  
   cd "$_where"
+
   msg2 "Downloading Graysky2's CPU optimisations patch"
   wget "$_cpu_opt_patch_link"
 
   # Follow Ubuntu install isntructions in https://wiki.ubuntu.com/KernelTeam/GitKernelBuild
 
   # cd in linux folder, copy Ubuntu's current config file, update with new params
-  cd "$_where"/linux-${_basekernel}
+  if [[ "$_sub" = rc* ]]; then
+    cd "$_where"/linux-main
+  else
+    cd "$_where"/linux-${_basekernel}
+  fi
 
   msg2 "Copying current kernel's config and running make oldconfig..."
   cp /boot/config-`uname -r` .config
@@ -220,7 +258,11 @@ if [ "$1" = "install" ]; then
       read -p "Do you want to install the new Kernel ? y/[n]: " _install
       if [[ $_install =~ [yY] ]] || [ $_install = "yes" ] || [ $_install = "Yes" ]; then
         cd "$_where"
-        _kernelname=$_basekernel.$_kernel_subver-$_kernel_flavor
+        if [[ "$_sub" = rc* ]]; then
+          _kernelname=$_basekernel.$_kernel_subver-$_sub-$_kernel_flavor
+        else
+          _kernelname=$_basekernel.$_kernel_subver-$_kernel_flavor
+        fi
         _headers_deb="linux-headers-${_kernelname}*.deb"
         _image_deb="linux-image-${_kernelname}_*.deb"
         _kernel_devel_deb="linux-libc-dev_${_kernelname}*.deb"
@@ -236,7 +278,13 @@ if [ "$1" = "install" ]; then
     # Se we can actually refer properly to the rpm files.
     _kernel_flavor=${_kernel_flavor//-/_}
 
-    if make -j ${_thread_num} rpm-pkg EXTRAVERSION="_${_kernel_flavor}"; then
+    if [[ "$_sub" = rc* ]]; then
+      _extra_ver_str="_${_sub}_${_kernel_flavor}"
+    else
+      _extra_ver_str="_${_kernel_flavor}"
+    fi
+
+    if make -j ${_thread_num} rpm-pkg EXTRAVERSION="${_extra_ver_str}"; then
       msg2 "Building successfully finished!"
 
       cd "$_where"
@@ -253,7 +301,11 @@ if [ "$1" = "install" ]; then
       read -p "Do you want to install the new Kernel ? y/[n]: " _install
       if [ "$_install" = "y" ] || [ "$_install" = "Y" ] || [ "$_install" = "yes" ] || [ "$_install" = "Yes" ]; then
         
-        _kernelname=$_basekernel.${_kernel_subver}_$_kernel_flavor
+        if [[ "$_sub" = rc* ]]; then
+          _kernelname=$_basekernel.${_kernel_subver}_${_sub}_$_kernel_flavor
+        else
+          _kernelname=$_basekernel.${_kernel_subver}_$_kernel_flavor
+        fi
         _headers_rpm="kernel-headers-${_kernelname}*.rpm"
         _kernel_rpm="kernel-${_kernelname}*.rpm"
         _kernel_devel_rpm="kernel-devel-${_kernelname}*.rpm"