Jerry, yes, it's in the frame. I think that it's just a combination of the trigger pin being several thousanths smaller then the frame hole and also that the other side of the trigger just kind of sets in a depression in the trigger plate. I swapped the trigger out of my 1920 Commerecial which has had very light use and little wear. It helped a lot but still not as good as it could be. I have a copy of the old magazine article somewhere that tells how to tune the trigger. I'll have to dig it out and see what it says. This gun is being put together as a shooter with mismatched parts so playing around with it shouldn't hurt.
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