I have a Rem model 700, and a Vortex Viper HS 4-16x44 LR scope. I bought a set of Leupold DD 2 piece bases, and both low and med rings to go with it. The low rings didn't appear to work, but I also tried putting the scope on with the med rings (which I figured would be no problem at all). Clearance with the barrel and all are no problem, but it looks like when I pull my bolt up, that it will contact the rear of my scope. I have seen several people with this combo on their rifles on this site, and others, so what could be the problem with mine? Do I need to go with a set of high rings, or is that even going to help?