Visited Daniel Morgan in his shop full of interesting, and mouth watering, double guns...showed him my repro 20 ga and he knew just what had to be done to solve the forend "popping off" problem.
Left his shop and went to lunch and strolled around Woodstock VT for a couple hours and returned to pick up the gun.
It now has a nice snap when attaching the forend and I am confident that he did the job adequately enough to ensure that it stays together for the future of me and my gun...of course, some clay shooting will be in order to test the work...
Daniel is a nice man and has a very interesting shop full of client's, as well as his own side by sides...he explained some of his projects underway at the moment, one of which was a bastardized, $60k Purdey that he is reworking to function again as a shooter...amazing stuff!
I think he has a dream job there in the hills of VT!