Jimmy, this thread seems to have run it's initial course, so I hope you won't mind my borrowing it for a question to the title audience.
A few years ago I screwed up and installed the forend on my 21 when the hammers were down. I was surprised there wasn't really much resistance, but when the hammers cocked the forend slapped hard into the barrels, and ever since there's been a little play in the fit when the hammers are cocked. Other than Galazan's, can you recommend a gunsmith experienced with 21s that you'd have confidence in to tighten the forend fit and not screw anything up? Andy W. did good work for me before the demise of his business, and I'm reluctant to send this to someone unfamiliar with the 21 forend latch.
Thank for any help you can offer!
Jay