I somehow have gas getting into my oil, the bike has been sitting for a couple weeks while I’ve been trying to figure out why the rear cylinder wouldn’t run. I changed my oil yesterday and while trying to start it up it backfired as loud as I’ve ever heard and next thing you know I check my oil and it’s full up to the top of light brown looking stuff. I’m not sure what to do, I’m pretty sure I have a burnt exhaust valve but I don’t think that would do it. 07 softail deluxe fuel injected 96” tob