Following-up: Purchased some 3M super-glue and the clamshell is holding fine.
That's the good news.
The bad news:
The mechanism failed inside. Won't go into the details but the short story is I just called Sunset to learn that the little 12" replacement belt and buckle can be had cheap for $203.50. [img]style_emoticons/<#EMO_DIR#>/biggrin.gif[/img]
Anyone have a spare passenger side buckle? Or know if this is a generic part available from a non-Porsche souce? (Hat's off the the "alternate sourcing" thread!!) If no reply here I'll try Parts Heaven or another used source.
Cheers, and thanks.