Today I noticed that the frequent bumping of the Legend against the first step has worn down the step corner for several feet. It tends to stay there with the body (between the tires) pressed against the step until the water pressure backs off. So far, my thought about preventing further damage is to place a flat rock along the edge so that it will absorb the impact. Is there a more elegant, inexpensive solution for this problem? Moreover, as the plaster otherwise looks fine, if I can protect the edge in some way, can I expect the existing damage to deteriorate even more rapidly, or would it remain stable?