I've owned my '06 AN400 for 3 months now and have put 800 of it's 4100 miles on it. I just finished inspecting/adjusting my valve clearance for the first time. I changed the spark plug while I was in there, and cleaned the PAIR valve with a wire brush. The bike started right up afterward, but after a minute or so I smelled something. I noticed a small amount of (barely visible) white smoke coming from the bottom of the PAIR valve. I let it run for a good 15 minutes on the center stand but it did not stop smoking. Is this normal? I thought I detected this smell in the past but never saw any smoke until I had the tupperware off. Thanks!