Got a call from the mechanic "fuel cap gaskets are worn, need
replacement" me: fine, replace gaskets
Another call from mech "uhh, no part number on the fuel caps, not
normal piper part, therefore no approved gasket can be found, have to
replace caps AND gaskets" me: OK, I guess no choice
another call from mech: "piper wants $250 each for new caps"
me: long silence uhhmm can you find used ones?
another call from mech: " found another source, only $180 each"
me: (sigh)