Hey all, I bought a 07 Yamaha rhino 660 project. I starts up just fine but when I step on the gas it starts to rev up and then tries to die. It also backfires. It has a chinese carb on it, but I got the mikuni with it that I will be going to rebuild. Any ideas what could be causing this and what a stock carb should be set at? Also, what idle speed should I set this at. As always, thanks for your assistance.