Bought a 2004 rancher 350 few weeks ago, after 1 day of riding it started to smoke white. Took it to shop and they said rebuild top end. So I paid them $500 got it home and ran it 1week and it started to blow BLUE SMOKE. Took it back and they said gas was in oil and they top end would have to be rebuilt again AT THEIR EXPENSE. they done it again and rebuilt Carb. Went to pick it up and run it for 5 minutes and it started WHITE SMOKE again worse than ever. Once I took it back they took top end off and said the rings have turned on piston. SO they turned them back supposedly. Went to get it ran it while I was there for less than 5 minutes and still blowing white smoke. Now they are telling me they think the rod may be bent and want me to buy a new crank and rod for it. I am so frustrated with this thing. Anyone have any ideas? Thanks in advance