I've seen that on the new guns and older ones the "wedge spring tip" is upright at about a 90 degree. It finally bevels the upper barrel slot to make a relief for it to come out. Filing a bevel on the spring tip to help it retract into the wedges slot and go into the barrel/arbor slot works well to avoid more stuck wedges.
It's almost always that wedge spring tip holding the wedge in. It does need modified but.....if you keep beating the wedge in then out the spring tip acts lke a broach and moves metal away from the upper barrel slot right on the edge....makes a nice bevel right in the right spot. ha ha ha ha
You can examine the barrels upper slot edge there on the off side and...hasten the tip of the spring making a bevel to the slot edge with a file. The spot is well marked by the first time the wedge spring finally does pass by the barrels slot edge.
Hope this helps.
Regards and so long,
Enyaw
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