I have 2 85 t-types ( actually one is my sons in fla.) my is running great, but his is running for about ten minutes and then it starts popping and missing. This is from a garage in pensacola. They just did a coil pack conversion and they say they got the right ones, but i am not sure. Any ideas? Maybe a bad module, the first one they put is was bad. It was running fine before the 85 module went bad. It has a new jasper engine.