One of the main reasons I don't test as much as I probably should, is because I can never figure out a good way to hold the axles in place temporarily. When I remove axles from a car that I am building, I usually just snap the tabs off that hold the axles down to the chassis. Since they aren't there anymore when I want to test, there is no good way to hold the axles down so that the wheels don't rub the fenders. I have tried modeling clay, tapes, etc. and have had no luck. What does everyone use to hold them in solid for testing? Any help is appreciated.