Hey guys, what are those hooks on the mm1 frame are called? They hook under the bar that sticks off the back of the plow? Anyway I bought a used plow and the were both bent backwards. I fixed them and tonight discovered one was broken completely off. I did a real rough driveway tonight and I think I lost it there. Is it safe to plow without it for a few days? Whats its primary function? Do these break a lot? Im hoping to fabricate a beefier one.