I guess I'm a little concerned about getting the stock screws retightened properly---your suggestion is exactly what I will do, bought a very nice Browning High Wall with the same situation awhile back and gently sanded out the channel on the left front and then gave it three or four coats of True Oil when satisfied with the clearance, but that was just the one screw to pull off the fore end---I tend to make things more complicated than they really have to be but then these CZ's really shoot well right from the factory and I hate to screw with it if it's not really neccesary---I'll go shoot it and see what happens as far as consistant accuracy and then go from there---
Did you get back up to the New England area for the deer this season ?----------John