
🤔 I'd say start by checking your connections at major ground points. A bad coil can give a person fits. A bad coil can work then not and randomly everything in between, At times they seem to work when cold an fail when hot, but they can do any thing. 🤔Condenser could be going bad. The points gap could be closing up (due to lack of lube on cam lobes and wearing the fiber on points) 🤔 Once I had a bad wire between the coil and distributor, it was so old the insulation went to dust once I touched it... So I'd say, double and triple check the wiring 🤔 Any moisture under the distributor cap? 🤔 While the distributor cap is off look for carbon trails and wipe clean the inside of the cap.
Good luck