Side-by-side picture of the old tension pin (left) and new tension pin (right) The old pin has compressed such that it no longer has tension as evidenced by the closure of the slot...as compared to new part...If you do nothing else, replace the pins. I estimate 365 days X 18 years X 2 door openings/day(4 compression cycles) = 26,280 cycles... This is conservative.. Replacing with new tension pin removed slop and ultimately decreases wear and tear on exoensive door check assembly arm.