Calvin,
A quick fix is to purchase some sheets of brass from the hardware store ($5.00). Cut a section out the width of the "role" about an inch long. Wrap it around a pencil and clip it onto the "role". Gun is on face.
The expensive way is to have a shim soldered to the front lug of the barrels. The Parker way was to change the "role".
Pictures to follow.
Harry
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