I highly recommend reaching out to Dan Morgan, Fine Firearms Restoration, VT. 8024574828

I spent the better part of a day at his shop this spring getting a Fox A grade hook to latch correctly. I learned a ton from him as he fixed the Fox and showed me several very nice Scottish and British guns, and particularly the quality of the finish on the interior parts.

He specializes in Scottish and British best guns and is a top notch guy.

-Tom