I had a SWFA SS 1-6x mounted in a Bobro QR set-up. The illumination dial ended up coming loose from the scope body, causing the illumination feature to fail. I contacted SWFA and they promptly sent me a replacement, no questions asked. I'm not sure if mounting the scope in a non-cantilever mount would have been a better idea or not. I've since had a couple of other optics on the rifle without fail. Currently, I'm waiting on a Vortex Viper PST 2.5-10x32 FFP to show up. I'll mount it in an AD non-cantilever mount or go with standard HD rings. I'm happy to see all of the positive press on the Vortex scopes and have the reassurance of their warranty on my side.