Ive been thinking a lot about stocks and cheek weld vs eye height with 56mm scopes. changing mounts isnt an option and changing stocks on both rifles would be prohibitively expensive.. I see on fleabay you can buy the kit to convert your stock into an adjustable cheekpiece but who would you get to butcher your McMillan stock?! Are they solid in the butt (finah finah!) or are they some sort of sandwich construction?!