That's darn good Bronko. Fun, aren't they? (And frustrating if you're getting a pan flash with no BOOM.) The RMC liner will fix that. While you waiting, drill out the stock liner a little.

I wouldn't file the sight until you get a few dozen more shots out of it. Or even better, get the Lyman 57 peep and live happily ever after. You will know true joy when you take your first deer with that .54 flinter.