I'm still flying my 29% Katana with the new Area 51 engine. I have used Vess 22A, Xoar 22x8, and currently swinging a Troy Built Models 22x8. TBM sells their props for $17 a piece, and they will drill them for $7. This is convienent for me as I don't have a drill press. I am still very impressed with my engine. It is off of the break-in fuel, I'm running Amsoil now. I buy small packets from a friend ([email protected]; www.lubedealer.com/dbcox #1568374) that you mix with one gallon of gasoline. It comes out to be 85.3:1 ratio. My idle is smoother, and the transition from idle to full power is smoother. Also, no more "skipping and popping" in the air at half throttle. Take-offs are 50% throttle, hovers at 75%. This weekend I'm going to put a tach on the prop, I may go up to a 23x8. My old AeroWorks 29% Katana S is a porker at 19 lbs, too! She's sturdy though, all my landing haven't been smooth, and no damage. Furthermore, MILTON has been great to me. He has always been there to help, no questions asked. He has always made it right. I recommend MILTON and the Area 51! I'll get pics on here as soon as I figure out how to get Kodak EasyShare to put the pics in My Documents/Pictures.