I grew up shooting a circa 1900 20 ga on a 28 frame - with a 2 inch stock extension, it fit well and is still the fastest shotgun ever for me.
My wife gave me a Repro 12 for Christmas and the comb was too high, so I took it to a Mississippi gun shop and had it bent to suit. They used hot oil and a jig. Then they refinished the area finish to match the rest of stock. This fixed the problem for good. And it fits me like a 12 ga glove.
I later bought a new Repro 20 and it fit from the get go: still does. ?
PS I am taking it to Hidden Lakes preserve tomorrow to shoot birds with some buddies.