Just wanted to thank all that helped me out. Found that pin and on the ring groove. I just cleaned up the scoring on the front of cylinder exaust area and Front of piston area. Cleaned the ring groove and gasket area. New gasket had two sticking tabs to hold it in place, so I figured no gasket sealent was needed. Never seen that on ant gasket before. But it worked out great. I lubed the cylinder with 2 stroke oil and piston and ring while puting them together. Put everything and fired it up on the 2nd pull. Thing has more power then ever before. So how should break in be for the new ring and such? My first rebuild starts and runs so far, find out how well it runs and stays together in wood in a few days. Once again, THANKS ALL.