when kawi change from 04 to 05-08 model on kx250 they steepened head angel by 1 degree but did not change the off set on clamps which was 25mm , that was a mistake , i think the rg3 clamps are 21.5mm off set which will give you more trail, the 04 clamps wont help at all , i have seen kx450 08 clamps fitted which have less off set which helps also but are only slightly less off set then the kx250 07 .another good mod is the pro-circuit rear linkage which is 3mm longer , that helps as well.