Ya Toyota, those stock flywheels are junk. I found out the hard way too, and wasted an entire afternoon in the process, trying to get one to run true. Superflyboy just go to Tower Hobbies and order the SV27 flywheel and collet. It is by far the best setup for the Vegas. Oh, and don't forget to always leave an 1/8th inch gap between your prop drive dog and the strut when you intsall your flexshaft after maintenance. Good Luck,

Scott