I have a SBE II that I am thinking about buying a set of these sights for. I saw on their fit chart that I need to buy the 8mm version for my gun. For those of you that have these on your SBE II, did you have to modify them at all or did they just fit right out of the box? The reason that I ask is because I have read numerous places that many people have had fitting issues with some models of shotguns which required either removing the plastic "liner" or shaving it off to allow it to fit over their vent rib.
Thanks