Just about to pop out to re zero the 7mm08 before setting off weds,

a few months ago I noticed the scope mounts had moved off the rail, it had lifted a couple of mm on the rail.

I reset it, and noticed the cross hairs were not vertical,
Loosened the clamps and re set,
every time I nipped it down the scope rotated a couple of degrees clockwise,
even starting with it a couple of degrees anticlockwise ended up a few degrees after.
after doing this half a doz times now I have stripped the hex screw

trip to the gunsmiths in the morning.