In a message dated 9/1/01 12:24:00 PM, zenlunatic42@HOTMAIL.COM writes:

<< I was thinking I could take the arm off, put some plumber's
epoxy around the little knob that the wiper connects to, then slide the
wiper back on causing the epoxy to mush between the two, harden >>

Andrew,

This is not the thing to do.  If you have the van long enough to need any
other work on the wiper mechanism, you better keep a hacksaw handy.  Do what
Terry said, first tighten it.  Hopefully the arm is still useable after
allowing the wiper drive stud to ream it out.  In the worst case you might
need a replacement wiper arm.
Rich