I’ve been offered a nice condition Winchester Model 94 in .32 Special with a Lyman 56A receiver sight. Since this is a pre 1953 rifle, I am assuming it was drilled and tapped by a gunsmith to install the sight. The sight looks further to the rear than a gun I have with a 66A. Without starting a firestorm, could I get some thoughts on how this might devalue the gun? Adding a side mount probably won’t be possible without more drilling. I like the gun and the price is fair, but I’m hesitant. Should I be?