Thanks for your answers, peakman. I did think, and the box/specs state silicone filled diffs, I have not yet opened them up. I am still curious what oil IS in the shocks, I just want to go a little thicker in the rear without changing them once to 30, if they already have 30 in them, and so on. I had put loctite on my wing screws, they did not seem to have enough thread to fully seat once through the adjustable part of the wing. I changed them, and no problems, maybe I should have looked for the ones that fell out and tried them again. do any mugen bodies fit? Or just the crowd pleazer? Thanks again for you time.