RE: Stock removal affect scope sighting?
You won't know until you try it a few times after taking the stock off. All of my T/C's are pretty good about holding zero. The Knight Disc rifle that I recently sold was not so good. Generally, guns with good bedding and a free floated barrel channel have the best chance of staying zeroed.
If you can get your hands on one of those automotive torque wrenches that measure in inch-pounds, try torquing the stock screws to 65 inch pounds each time. Also - when you get the screws started, but not yet tight, put the muzzle of the rifle against asolid surface and push the action back into the stock firmly before giving them final torque.