I thought the auction site ones were expensive I think I found their source at Geier & Bluhm PN 3-0507. In small quantities they are 1.50 a piece. I decided to go with the DIY drill and fill approach though.
As for the rude comment, if you don't care for my post, then just move on another thread. I certainly not have to supply my financials to anyone for their approval before I purchase something.
"I've found that Goo Gone should absolutely not be used on Sinar items. The bubble mounts dissolved like an Alka Seltzer in a glass.
I have a call to Sinar Bron scheduled to order replacements.
Thank you all for you suggestions, they were all worth a try. "