I hope someone can help me out with this. I'm new to this forum, so take it easy on me. I'm having problems with my machine not cranking over fast enough to start it. This problem has been plagueing me for several months And I don't know where to go next. It is not so bad when it's cold, but after running for some time, it seems as though something internal tightens up and will not allow the starter to spin over fast enough. My valves are in spec, I'm running stock bore Wiesco 12:1, 2006+ crank (I have a 2004) and i have recently put a 2008 starter on it. I have an oversize battery. The only other motor mods i have are a +8 oz. flywheel and a Rekluse z-start. Thank you to anyone who can help.