Guys I just rebuilt this quad again has less than 10-12 hrs ride time on the rebuild. Valve deals were replaced during rebuild. The quad has set for a few weeks, went to start it the other day and it smoked blue out the exhaust for 10-15 sec then went away. I noticed if i it idle then stab the gas it would puff smoke. What gives. The whole reason for this most recent rebuild, is the quad began to smoke during start up and throughout the rpm range it got bad so had the engine re-honed since I noticed the cross hatching was gone, I got new rings, and valve seals, the piston to cylinder tolerance checked out so did the valve guilds. Put it together has ran good for 10-12 ride hours, but now it's smoking on start ups. I am trying to sell this quad but can't do it with it doing this crap. This quad has been a pita.