I just purchased a 2005 raptor 660r. It came with a curtis sparks x6 full exhaust and a pro flow air filter. The jets are 25 pilots and 167.5L/177.5R mains. Now the problem is that when I start it, the idle seems way too high. My headers then start to glow within seconds and I get constant popping and backfiring from the exhaust. I tried messing with the idle screw to bring it down a bit but I didn't notice a difference. It starts right away and stays on and actually runs good but the backfiring is getting annoying plus I keep burning my riding pants. Another thing is that my reverse light blinks on and off within a few seconds of starting it and only goes away when i put it in gear. Is this normal or is this something that needs to be checked out?? Any help would be appreciated!