Well, it's not necessarily the cam's fault . . . or at least all of it. The bolt arm was sliding off the side of the cam (which it isn't supposed to do) and the way too heavily tensioned bolt spring made it all happen faster!! So, set up correctly, the bolt only needs about 4 lbs of tension (not 9 or 10), and the bolt arm should fall off the front of the cam (not slide off the side). Once things are put more to the designed setup rather than just to pass a function test, add a little grease and it will last long enough for your kids kids!
Mike