Thank you Bingo, I think I will go with the Super Tigre .45 as its only 100$ and will probably be a very large noticable difference in performance. I also have went through different sizes of props, I am using a 10x6 or 10x5. What size would give me the most top speed? like a 9 size and what pitch should I go with? What about a pylon racer prop? Any suggestions on props would be great, thank you Bingo. I will do that next make it a tail dragger.