Overcharging Issue & Car Start Issue

The model of this MSD on this car is Pro-Billet Ready-to-Run Distributor P/N 8388. Coil is the Blaster II P/N 8202.

Funny thing is that I've been running with this coil and distributor for 5 years and never had a problem like this. I've seen these coils and distributors on other cars and they seem not to have a problem ..that I know of.