Stackeddeck,Don't feel too bad I stripped the screws on my 260 too.I started with a philips head screw driver and couldn't get them loose,so I tried my 18volt drill and stripped a couple of them.I then tried a philips tip and used a small wrench on it and snapped the head off that one.I'll probably have to take it to a machine shop and get them drilled out and rethreaded or get an airplane cylinder,prop hub,and take the recoil started off and turn it into an airplane engine.I wondered why they were so tight.Thought maybe they put something on them at the factury.