Has anyone had any issues with their tract scope holding zero? I replaced a viper pst with the tract 4x20 bought used on here in my ar10. Prior to the swap, the gun would shoot 1-1.5ish inches, not its legit 6 inches off in any direction. I checked the torque on all the screws, re-seated the mount. I haven't swapped the scope out yet for a known good one, that's the next step, but I was wondering if anyone has had issues. Thanks