I have a friend who bought a 2012 450 over the winter. Right from the day he got the bike it was hard to start. Im talking 15-20 good top dead center kicks every single time. Then I rode the bike. I have owned and ridden a lot of 450s and this is by far the slowest 450 I have ever ridden (maybe slowest bike period). It really just has no bottom end at all I even tried using first gear through the corners. Something is obviously wrong, but he just cant figure out what. Valves and timing have been checked and are perfect. He switched tanks with another Suzuki thinking it may have been a clogged fuel filter. Still no better. The weird thing is the bike runs clean. Doesn't pop or bog or anything it is just slow and won't start. He did say the last time he took it out it was stalling in corners some. Any ideas????