Okay so i love yamahas, but this is my first Raptor. I have an 03 660 its been piped and jetted and i picked it up for only 1400. It starts and then i get some white smoke from the exhaust. The only problem is I think the smoke is from it the fact it will only run with the choke at full. The guy i got it from said it has been sitting for about a year and a half. But its in pretty good shape. Any suggestions. I am thinking clogged idle jet.