the pinion and spur gears for the RRR are as follows :
1st pinion 15,16,17
2nd pinion 20,21,22,23
1st spur 59,60,61
2nd spur 55,56.
so having other than like scott mention is far off the original ratio's.
i usually use 16,21 pinion and 60,56 spurs....but these depends on track layout/length. there shouldn't be any problem unless something is not right. try to inspect/rebuild again your clutches as per manual. gud luck
BLacK cRoW RaCiNg TeaM
pemandu upahan ;)