George,

BTDT.  It's reseal time.  You can nurse it along, but sooner or later you
gotta re-do the heads.  Probably right after it overheats in the bad part of
town with your S.O. driving with a van load of girl scouts and all their
camping equipment.  The good news is that gaskets is probably all you're gonna need.

Jim Arnott
WetWesties
Union, OR (Where there ain't no "bad side of town.")