No mods at all, use the center hex 'bearing' out of your old spur for the center of the rc10gt spur, tighten down the pads on the spur, and yahtzee.

GRRREAT!!!!!:yipi: I will be purchasing the Robinson Racing Double Disc Slipper Kit for the Associated Monster GT tonight. Many thanks!!!!:party:

But you'll still have the same pinion pickle...:neutral:

Mike has some 5mm 32 pitch instock so I will pick a few up of those tonight also.

I just got an email from mike and he said that the 18-24 tooth gears are hardened so if you get the robinson slipper and spur you could get the 65t steel and that would be very strong.

I ordered some parts.:yipi: It will be a mix and match time though. I got the Robinson double slipper in the Emaxx 65 tooth and the Associated Monster GT in 54 tooth. I am hopping for the GT one to work. I ordered 32 pitch 18 tooth pinion. I also got from Mike a 20 tooth Mod 1 pinion and a 52 tooth Ofna spur gear. I am hoping I can swap the 54 tooth for the 52 tooth and use Mod 1 gearing. Mike didn't have any 32 pitch pinions over 18 teeth in stock. But if the Ofna spur gear works I am on the right path Mike set me up with. Cross your fingers.:great:

Stay away from steel spur gears. It is best to keep the spur gear plastic as it is an easy and inexpensive weak point to replace. Going with a steel spur gear moves the weakest point to the transmission, which is much more time consuming to repair and most of the time more expensive.