I don't know why I didn't see this before, but posting this stuff is showing me what is going on. I measured tacks in both directions and the hooked tacks are roughly 1/2 the distance across compared to the non-hooked. I'm tacking too sharp and slamming on the brakes. I don't know why its just in one direction, but I can fix it. Same thing, but to a lesser degree on jibes.