Cap'n,
You might want to try a good plastic epoxy from your local auto parts store. You just can't beat epoxy. Just make sure you do a test to find an applicator that will lay down the right size bead within your drying time before you do the real thing.

__________________
-Marty

1986 300E 220,000 miles+ transmission impossible
(Now waiting under a bridge in order to become one)

Reading your M103 duty cycle:
http://www.peachparts.com/shopforum/831799-post13.html
http://www.peachparts.com/shopforum/831807-post14.html