Originally Posted by Sake-San
To eliminate the mounts as an issue try marking with tape against the fix points, this will quickly indicate if they are creeping.
With the ATP 61's try slacking off the dovetail clamps, then tighten the elevation adjustment clamps next and finally tighten the dovetail clamps as the last step.
I have used them with a T50 and with SIII's without issue allbeit on TX's.
It's not the mounts (or scope within mounts) sliding that i have issue with. no creeping along the rifle main axis.
I'll try your way of tightening, thanks
but really, the main thing here is that i've lost my trust in sportsmatch, and i will not have a piece of mind untill i try some other mounts.