R-Dome suction cups

I love my R-Dome but...We have the somewhat newer style that uses the suction cups. The problem is that one of them is broken and although this one is a spare, I would like to replace it just in case. No problem right, just call my dealer and get another one. Not so fast. The dealer has been of no help at all. They say that Dometic, the manufacturer gave them no information. My dealer's suggestion was "Google it". That's no good. As a side note my dealer made a big deal about not buying from "out of state" dealer because they would not support their sale. Humph! So much for that. Back on point. Anybody know where I might be able to pick up some suction cups since my guess is this won't be the last one to break?

Maybe off topic but.....I have the other type of attachment.   The dealer put all the parts that are attached to the wall in the wrong location!  Nothing matches!  So, I'll be going to suction cups of some type.

Good luck with yours.

Terry