I bought a 2016 700-4 a few weeks ago and I'm starting to get the feeling I was ripped off... It ran fine during my test drive, but now it gives off white smoke on startup and loses power at times. Seems that when I change gears or its been sitting for a few minuted that I get a bunch of smoke. Enough to wear I can't move it. If I cut if off and back on it will usually work, but this is getting really frustrating. I changed the oil and spark plugs a week or so after I got it home. Any ideas on what the issue could be?