1971 XS1B. Note the chain deflection caused by the center stand foot hitting it. Clearly, there should be some kind of "stop" to limit how far up the center stand can go. I am aware that there is no muffler in my pic. Is the muffler the stop? The big curve on the center stand's tang just collides with the bottom of the muffler? That seems pretty inelegant, and seems like it would dent the muffler bottom over time. Is that how it works, and if not, what's missing?