I bought this used stud of a machine used about 10 months ago. Really powerful bike, has an aftermarket intake, exhaust , aluminum head, and "some work on the carb". It ran fine for 7 months, but it started having some problems idling. Long story short, it got to the point where it was hard to kick start. I took the carb off and apart, cleaned it thoroughly, put it back on. Now the bike wouldn't kick at all, but it would pull start behind a quad. I read up online and thought it might be the valves, sure enough they were out of spec and the timing marks were off on the cams. To fix the timing, I put the bike at TDC and took the cams out, then set them back in where they should be. Put the bike back together, still won't start. As far as I know the only thing out of place is the valve specs, could this keep the bike from starting??