Stan, Dennis held his class at the summer classes in Trinidad ,Co but their schedule is out and the class is not listed.
Fitting "new old stock " barrels can be full of pit falls. Hook may be cut too high or too low, fire pins may not be concentric with chamber centers, out of square breach and lump, 4 end loop issues to name a few.
At the point you are at I would check to see if FPs hit center of primers. If so I would put temporary shim on the hook to set the barrels back enough too smoke fit them tight with good contact to the face. Then remove the shim , build up the hook and smoke fit .
Working both ends to the middle will give you results like you have.
If FPs don't center on primers that would need to be addressed 1st and is whole other issue.
Others may have other ideas but this is how I would go about it.
