I am not sure whether my stock clutch disc / pressure plate is wearing out or my timing is off. Normal moving off and gentle acceleration its okay. Its only when I step on it (> 50% throttle), the engine revs high but I don't feel the G's. Another example when pushing it from 2nd from +4K rpm then shifting to 3rd and throttling in roughly the same position, the rpm hangs at 4K with no apparent G's then drops suddenly to 3K and climbing when the car significantly picks up. This really sucks the acceleration. Any ideas????