I have a FFII 3-9x40 that I had to send back b/c the scope wouldn't hold a zero...All along I thought it was the gun (CZ550). I will give credit to Burris though...I shipped off to Greeley, CO to be fixed and had it back within a week. It was some very fast turnaround.
Also forgot to mention, the scope is OK for the money but would go the Nikon route before I go the Burris route next time. The Burris Compact I have on my CZ452 American is horrible at best.