It happens so I bought an ignition kit from Accuspark.
Pinto distributor converted to pointless ignition and with locked mechanical advance + BlackBox ignition ECU that connects to a laptop.
Installed all the necessary wiring etc. yesterday and swapped the distributor.
Got the car running fine first, uploaded a new ignition curve to the ignition controller and checked with timing light it was adjusting properly.
It did at first but then suddenly the car stopped and when I tried to start it again, it was popping on the exhaust. Turned the engine to TDC point, lifted the dizzy cap and saw a rotor arm that was now pointing to the number 2 cylinder instead of the first! For some reason it had turned to a very late timing all on it's own.
Lifted the dizzy off and seems something clearly broke, it doesn't rotate nicely with fingers like it did before installation.
I contacted Accuspark thru Ebay and hopefully will be getting a new dizzy soon. Meanwhile I installed the old dizzy back on and the car is running fine again.