My 450 has always ran and started perfectly. One or two pushes of the electric start and it always fires up, know matter what the temp. FMF Powercore and ecu are the only engine upgrades. I have owned this bike since new. Last week in 30 degree temps I didn't realize my friend put a footpeg through my radiator and I rode for a couple, to a few more hours before I noticed. Guys behind me smelt oil while I was in 5th gear open, that's how I discovered the hole. After changing the radiator, I did an oil change. About 3 oz of oil came out of the bike, OUCH! Did a fresh oil change/filter, and the bike appears to idle and run fine. I had to test in snow with spikes but it seems to run fine. Here's the problem, it doesn't start right up anymore. Have to try all different methods to start: cold start button/ holding throttle slightly open/ battery charger all these seem to help get it started but no definitive start. Kicking does not help and it seems to lock at TDC a lot when using the electric start. Any ideas?