I'm still feeling stupid about this. It's New Year's Eve and Keith & I are shooting mortar shells in the front pasture. We come across one with a bad fuse. Sucker will not light no matter what. We try several times, but no joy. I even pull the fuse out and try lighting the other end, just to see what happens. We finally toss the shell.
So the next day, it finally hits me. Why didn't I take a second shell, cut the fuse in half, and stick it into the otherwise good first shell? D'oh!