i will check the compression this weekend! i live in south east michigan so i would say my elevation is close to sea level.....im running br8es plugs right now as well and have fouled out 2 pairs of plugs in like 2 weeks which leads me to believe that it is running real rich right now or i got too much oil in her..... I do think the bike has a boost bottle/canister as well so i do not know if that would make much of a difference or not.....