When installing primary clutch shims, which side of the spring do you put them on? Towards the engine or towards the outside? What is the most shims you can put without causing coil bind? (1993 Yamaha Phazer, YXR clutches). I've installed a heavier spring with 2 shims and I'm only engaging at 3200-3300 rpm's. I'd like to be engaging at 4000 rpm's. Any suggestions?
1993 Yamaha Phazer
1990 Suzuki DR 350 S