Tony- I have a sample soaking constantly in kerosene, for over 5 days now, and it is still very hard on the surface. Cant tell a bit of difference. Considering this will never be submerged anyway, I am not concerned at all. ..................................Jeff- Hey, always wanted to tell ya how much I appreciate your informative posts. You are da man! Yea, its fun milking out some mph, but I typically fly 70-80 mph. On cross county flights, then it just loves to cruise at 100-105 mph before my fairings. It seems to now fly easily go to 110 mph with plenty of collective left. A perfect example where this speed benefits was when i flew back from Chicago a few weeks ago. I had 20 plus headwinds, and i cruised at 110 mph. .............................. My GPS showed a groundspeed at 85 to 90 mph still. Had I had a fuel flow meter, it would be interesting to see how much the fuel burn has decreased at different speeds. Stan