My kit is in the mail, and I'm contemplating gear ratios to run stock, and I see that the new spur gear has some larger holes in it than the legacy Kimbrough solid wheel gears. I'm sure that this has been answered, but I can't seem to find it: Will standard Robinson 48 and 64 pitch spur gears work? Any issues in getting to the motor mount screws? When will the TC6 specific 48p spur gears be available?