give Warne a call. it seams that some of there rings are picky about bases. i had a similar problem with a scope base and they explained to me that the rings work on a cam action. they have a a very fine shelf or lip on the bottom of the rings if you look. sometimes these tolerances are off. they seemed to think they were powdered coated too thick in my case. i had a problem with a set of low rings but a had a set of highs and mediums that worked just fine on the same base. Warne sent me replacement rings that did the same thing so i have to believe the scope base is at fault as well as the rings being picky.i ended up coating the inside of the rings with black liquid electrical tape in the bottle.gave it a light even brush on and let it dry for an hour. i do this with my heavy recoil guns anyway. you have to know where the scope is gonna sit though. the dry liquid electrical tape wont hold up to alot of sliding back and forth.good idea to take measurements where the scope will sit when using the liquid electrical tape. any extra liquid tape that runs over the edges just rubs off when your done. the liquid electrical tape took up the slack in the rings and made them bite the base without any back and forth movement. after this episode and the fact i hate dealing with the locking key on the Warnes i will only use Leupold PRW-S for now on. i would get different rings.