Once they're crushed, how can you uncrush them so you can recrush them? If you use them you are flirting with a water leak, you might be very lucky maybe if you torque them an additional 5 lb. past what you torqued them the last time but then maybe you wil break a head bolt and maybe it will leak anyway. Better safe than sorry, get a new set of gaskets, just my humble opinion.

Don Shillady
Retired Scientist/teen rodder