
Warning - I wonder if you (the general "you") should consider disassembling your rifle as much as possible and taking the fore-wood (NOT the stock!!!) off before you bang a tight fitting ATI mount into place.
I have cracks in my forewood leading from the magazine towards the muzzle, the forewood is sliding 3-4mm muzzlewards whenever the rifle is picked up, and I didn't notice that before I tapped the thing in.

There are a few bits that fell off of the forewood before I did it, i.e. last time I went shooting, so it MIGHT have been a pre-existing problem, but that's not to say I didn't make it worse.
Am currently waiting for local gunsmith to have a spot open to fix things (but was thinking of getting him to have a general look-over anyway, as I suspected things were not all that flash with the furniture even before this happened.)
Yes, I know - I should probably have known to do this... but what's done is done and now it must be fixed.
YMMV and I'd love to hear about your advice/experiences, even if it's too late!!!