I've tried to gather information from the sites mentioned above and all I can say is that they talk over my head just a bit. Thank you Dave. You've helped me out a lot. I'm going to go with the lightest bar (.095) and extend my arm to the rear side of the a arms (drill holes down the length) so I can play around with the arm lenght (longer lever carries less load) a little. If that bar is too light I can step up a size and do the same.