Stan - Thanks for all that information. I have never seen one of those add on ribs except in internet pics, but have read some about them. I read of one guy that made one of wood as a pattern and then had somebody make one like it out of aluminum.
In searching the internet, all that I've found are really high and make it look like a sxs trap gun. If I could find one like you described, that would indeed solve the problem. The major difference as far as shooting between the 425 and the 626 is that the 626 has a high rib that lines up with poa. Adding such a rib to the 425 would make the guns similar enough that I could easily switch from one gun to the other.
