I have a nice Japanese box lock/extractor gun. Has chopper lump barrels and double underbite. Pretty typical stuff I think.

I noticed that at lock up there is a very small bit of wiggle. So after looking it over this is what I found. The wiggle seems to be up and down not side to side. When you put upward pressure on the barrels the fit is tight as a vault with no wiggle left or right and no gap at face. It seems the interface between the locking bolt and lug surfaces are not as tight as they should be thusly holding the barrel flats down tighter to the frame table.

The lever is just ever so slight left of center.

Does this make sense and what is the recommended fix?

Thanks