hi, my c90 starts but as i accelerate it over revs and goes forward very slowly, it sounds like the clutch is slipping but when you kick it in gear it moves forward. We had to take the engine apart due to a seize and when we put it together again it started with little effort but the above happens. wasnt sure about how to fit the 3 bearings around the clutch, which way do they go in, any ideas, thanks in advance. Also anyone have an exhaust for a c90cub 1980's i think.