I know I saw a thread or post about this but I can't find it. I keep having problems with the rear drive hub that goes on the end of the slipper clutch loosening and I lose front wheel drive. No matter how hard its tightened it still comes loose, and I just stripped it out trying to tighten it. Why cant it be a straight thru grub screw pin design like the front? Has anyone used the front hub on the rear and drilled it thru or something?