I'm worried about the whole top end exploding, lol. You don't run a bike that runs like crap and won't run clean until 4K. You don't run a bike when you have no idea if the timing is correct or any way to verify it is. Like I said, bail. Stick with the dirt bikes, this one will cost you 4 or 500 when you do the top end in. If you don't mind that then fine, keep running it. In fact, give it what's called an "Italian Tune-up" - take it out and run it at red line for a few hours, lol.