Truckracer, I certainly mean no disrespect to you or to anyone for that matter. I'm simply stating what I see. I have never ment to imply that you do not know what you are doing. However if you look around for the most part the hobby has changed. There are fewer and fewer guys these days that do know their way around an engine and even fewer that truly know how to trim their airplane. We see everyday on this forum and others. The engines forums are full of guys asking questions and guys having issues with brand new engines, most of them budget engines. You are correct that some top pilots can't work on their own stuff but they know enough to have someone around who does, they know when things aren't right and how it's going to affect their scores. Being that you have participated in IMAC I would think that you would agree that we need an engine that performs flawlessly, especially with today's more demanding sequences. Not everyone needs that level of performance and again that's where the difference of opinions come from. Nothing wrong with that, everyone is entitled to his opinion and I respect yours.