Quote Originally Posted by Gomizzou1954
I just bought a Mark II BV and the Burris Z-rings. I bought Weaver #24, 2-piece bases. You have to remove the screw from the Z-rings and slide it on from the front or rear of the base, then put screw back in.
Good catch Gomizzou1954. I didnt think of that being his problem. When I put my zee Rings on the 1st time I thought the same as 1wps. It took me a minute or two to realise I needed to pull the screw out and slide it on.

Note: Be sure not to tighten the nut too tightly. You run the risk of breaking the bolt if you do.