[PC/SR]

One problem I had somewhat similar to yours that drove me crazy for awhile was the metal covering over the wire that goes from the switch to the distributor was intermittently shorting out. That metal cover goes to ground. If it touches any of the connections in the junction box or any other "hot" wire the engine will die. On mine, bumps and vibrations would short it out intermittently and the engine would die and miracously come back to life. Wrap that wire cover with black electrical tape to insulate it. You mentioned screwing the connector into the distributor so I assume you moved that wire in some way,

Also double check that the "button" on the end of the wire from the switch does not push the metal tab that the "button" pushes into contact with the frame of the distributor. I put a piece of tape behind that "button" contact tab to insulate it.