A target that is in good order and lubricated should function as intended for many years. I sometimes wonder whether a large kill struck at the extreme 3 or 9 oclock position could "twist" the paddle, applying all the force on one side which could jam the pivot. The pivot would of course need to be dry and probably also rusty for this to happen.
HFT, for people with only 2 buttucks!
VooDoo TwoTwo The next chapter.