I've had something opposite of that actually. During high school bowling season my senior year, when we bowled at the brunswick alley in a couple of our matches, they had changed the house shot to where it would hook so much that the right-handers had to play way inside. There was no room for error because if we got it too far right, it would overturn like crazy. Literally, I remember one of my practice shots, i threw my normal shot, and it went dead left of the headpin. And apparently the shot was fresh. I wasn't accustomed to playing that deep, but I didn't do too badly over there at that time. Left side of the lanes seems normal, but there weren't that many lefties anyway.