You mean 32d F1 Euro?
I think the crown gears are JK but I think Red Fox is making them as well. Some cars are jigged 3/32 vice 2mm. Gears are available for both. Others will answer this better but Lou Pirro taught be about the 64p crowns working better with 72p pinions. Try the 7t 72p 2mm pinion from Camen at the start. The gear saver that I know is tubing/axle spacers that keep the crown gear from moving away from the pinion.
This is a start for you to chew on and so others can pile on, especially the guys that race the class all the time...
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