has anyone here used the adjustable weight clutch pins for SLP. I ride in Iowa at sea level and in the mountains out west and I think this might be just the ticket for me. I just wanted to write on here and get some feed back about them. Also what weight pins should I get. Sea level to 10000ft. They have three choices (10.5 to 16gram, or 13.8 to 19.6 gram, or 13.8 to 23.2 gram) I have a 2002 summit highmark X 800.