I've got a couple of hundred miles on two different SLKs and have not seen that. I remember now you posting about the droop. My right leg is shorter than my left according to my tailor. So you would think I'd have a droop by now too if the saddle was designed to flex that much.

I'd send it in for evaluation. The worse thing they can say is that it's not a defect. But you may get a new saddle out of it.

Veronica