I do want to mention i was using Teflon tape on the breech plug. I also was using the Federal 209A primers. The primer is also a compression fit so it's snug sometimes pulling the bolt back. I'm sure that will change with different primers.

Lehigh agreed to make the FPJ plug on Monday. The non FPJ plug will come with a primer holder. The current Knight version wont work. That part has been modified to seal better.