Need help, car won't start-sometimes, wierd can't figure, wonder if anyone else has r

[skiwesser]

Checked the coil with a screw driver close to ground and no spark, didn't have a test light , but when I'm working on the car say to check compression I usually unplug the wire to the coil and I have to put a rubber cap on the coil terminal because it'll arc to the fender so definetly no spark.
I changed the module on friday and it has aready happened 3 times since. I am going to try a coil the next time it does it, probably tomorrow
I got a new (rebuilt) distributor a couple of months ago because on the dyno at high RPM the graph got a little sqiggly, but I am almost sure the first time this problem occured was before that, then it was a few weeks before it happened agian, dist. swapped in between, and it has gotten progressivly worse, but I suppose it could very well be the new dist.?