Dumb brake question.

The car was a 4 wheel drum brake car from the factory. When the car was rebuilt (all new brake parts from Dr. Diff) we went with 4 wheel disc and master cylinder. The booster was rebuilt by Booster Dewey.

I am wondering if the pedal rod may be the issue? I sent an email to the shop working on the car with a response from Cass. Hopefully we can get it sorted out soon!