I just finished rebuilding my 350 using a Wiseco HC piston and gasket set. I was wondering if I will need to enrichen the fuel mixture a little bit? So far I am happy with the way it runs, I only have about 15 minutes of warm up and rode it around the yard some. I think I am going to try the Motoman break-in method, running it hard under heavy load to seat the ring good, instead of the take it east method. Any opinions?