Scott,

My experience with gluing Bug windshield gaskets ran from negative to
nightmarish.

Dow Corning makes a windshield sealant that is a silicone grease --
very benign toward your paint, makes installation a comparative
breeze, and discourages rusting for years afterwards.  It is not
cheap.  If you have access to a lab equipment supply house, their
'high vacuum grease'  is worth the $25 cost of a large tube.  Usual
qualifiers,  IMHO, YMMD, FWIW......

Glenn
Queenstown, MD