If adjusting the LPR changed the leak at all, then it may not be a leak at the breach, but somewhere on the front block.
If it's a breach leak, then moving the bolt back and forth will change the pitch of the leak.
If you move the bolt, and nothing happens, it's a front block problem. Spray the front block with soapy water, then slowly gas it up. You should see bubbles where it's leaking from.