Datacolor User to User Support Group.

ColorVision has not replied to my email of more than week ago, and a
search of the messages in this group yielded no pertinent hits, so
here's my question:
 
 Has anybody here needed to replace one or more of the suction cups
that hold the Spider Pro against the surface of a flat CRT?  If so,
where did you find them?
 
 Two of the suction cups on my Spyder Pro no longer stay in place more
than a few seconds.
 
 Thanks in advance.