Tonight, I had fuel bubbling up into my sight tube on the wing tank. This is the first time ever this has happened. Also, the last 2 flights, I have a tiny amount of fuel leaking out of the vented cap on the header tank. I flew the pattern 3 times tonight, and the fuel did the same thing all 3 times. I did have full fuel, but still, I have never seen this before. Any ideas? Gary
