found that with my basic 6x42 S&B too, if mounts don't sit nice and aligned you'll be in the middle of zeroing and find you suddenly can't turn the turrets enough to get the cross hairs where they need to go..Pain in the azz they can be!!! I do love my S&B but I'm not sure I'll be the most loyal customer in the world if I ever find better! (and 'no', I'll never use Swaro's,,,they're just ugly fokkers - LOL!)...Zeiss, ok, that I can cope with.