Yes, what is lifter to bore clearance?

Agreed that some photos/video would help.

Surprised to hear it's a gusher with bushed bores. I'm running solid roller in an unbushed block. .0015 clearance and oil leakage around the lifter during priming seemed minimal to me but I guess that is subjective. No restrictors and pushrod oiling.

1100 rpm idle was 49psi with 20-50 and now 41psi with 5-30