> Has anyone figured out a good method to tighten the wing window up in the
frame?

BTDT only one good way.  and another might work if you are real lucky.

You have to take off the door panel.   Then you will see that on the bottom
of the vent wing frame there is more or less a clamp that holds onto the
shaft that the window swivels on.  On the back side..that's right the back
side of that clamp is a phillips head screw.  If you have a teeny phillips
head bit and the little ratchet that slips over those bits( Sears has it for
about $10) you may be able to tighten it up.  If this does not work, the
sure fire, but more time consuming way is to pull the vent window and
tighten the screw then replace.

I have often thought of measuring the exact location of the phillips head
screw and drill a hole on the exterior of the door, then use a rubber plug
from the hardware store to fill it in.....

Adam P
81  Westy "The Brick "
70 Single Cab "Whitey"
74 Beetle "Ol Yeller"
73 Transporter (STILL at paint shop)
1988 Vanagon Wolfsburg
1976 Transporter (New CA bus)
75 Campmobile "for sale'
Used Vanagon Parts for sale (mostly aircooled