I have a 300xc and I had the rod that comes from the bottom end up to the cylinder unbolted. There is a small spring in there. I have no clue which way it goes. It would be under the cover on right side of cylinder. I have it hooked up now but when I took it for a ride it feels fine till I go over half throttle then the power is just flat. I'm wondering if I have the timing messed up?