I've noticed a gas in oil smell recently on the DRZ and I'm trying to track down why. The petcock checks good but even if it weren't I have an FCR39 (slant) carb that SHOULD overflow any extra, right? The bike runs fine, is not using any oil, and the oil level hasn't increased at the dipstick. I do ride it hard offroad and it's typical that it ends up on its side once a ride or so. Should I be concerned about bigger issues lurking or is a little gas in oil normal for a DRZ ridden this way? Is there some float adjustment that could cause this on the FCR? I'm definitely going to check the overflow line to make sure it isn't blocked but otherwise where should I look? More info: Bike has 20k+ miles, but runs fine. At last valve check valves were in spec but exhaust valves were on the tight side of spec (1500-2000miles ago). Need to check again soon to make sure they aren't moving.