Originally Posted by andyuk99
I bet the spur gear does not run true ... even Andy Moore drops the carbon bit on the gear. You may need an additional grub screw to get this correct.
It runs true if you use all 4 screws on the spur and tighten it as you would a top-deck. If you cheat a little and only use two then it will sometimes warp the gear.
As for the alu carrier running out, the two grub screw thing does help. (I had to do it with mine way back to get it to run true..)