IIRC the lock screw goes thru the breech plug and may give some resistance to rearward movement as does the tang screws. reducing the forestock to just shy of the muzzle and glassing the breech gap (and seat if necessary) seem reasonable if your going to keep it. With some care these can approximate a custom rifle at an affordable price. I do agree reducing barrel length may help balance and handling but i think unaltered, early ones will always bring a premium.