Hi... I just received an exciting package the mail, my Vortex Diamondback 3-9x40 with an EGW HD Remmi 700 Long Action Base and a set of Burris Xtreme Tactical 1" Low rings. When I attach the rings they can slip forward and backwards! Both rings are doing the same thing. This isn't rock solid. I'm baffled because I see that so many people use this setup and I thought Picatiny rails are universal. I'm going to contact Burris and EGW tommorow... sigh. What do you guys think?