Great minds and all that....Although my shooting is nowhere near NCG's!I have high BKL mounts on the FWB and similarly had the scope walking backwards 3 or four times. I recently added thishttps://www.pyramydair.com/product/sportsmatch-scope-stop?a=7860And no more movement.Oh! And five in one hole at 20 yds
Not wall hanger class, but shot a few more groups this week with the FWB Sport to make sure the Sport and I were still in sync as far as consistency. Had to make a couple clicks of adjustment on the scope, but no big deal. Took a lot of work to get this kind of consistency with the Sport, but it's been so worth it.