Anyone have troubles with the polymer inserts in OptiLock rings and gloss scopes? I had a gloss Elite 3200 installed in them and it "slid" forward under recoil. I had tightened the OptiLock rings at least as tight as any others I've used and this was the first time I had a problem. (I've also used Millets and Conetrols on this rifle; a Sako in 300WM.)

Just wondering if more torque is required for the polymer inserts to grip properly or if I'd be better off using a matte scope with a rougher surface. Thanks!