Yes guys, the serial numbers all match - including the number in the wood stock. I have no reason to believe anything has been messed around with. Close inspection reveals that in my case, we're talking about only 2 or 3 thou of an inch to free it up....but where that's taken from has to be very carefully thought out.

It may be possible to remove .001" at a time from the cartridge release tab, or it may be polished off the leading edge of the side ramp feeder.
I'm just not sure yet which approach to take....but I believe I'm getting there.

Trouble is, once metal is removed, it cannot be put back. So, I have to get this dead right!
Cheers, deeangeo