<VV> Fitting Door Weatherstrip

[Richard Tyson]

Slowly but surely I'm getting my '65 Monza back together.  This weekend I
attempted to install a new driver's side door weatherstrip purchased from one
of our favorite vendors.  Starting at the latch side, I quickly realized that
I had to stretch the rubber in order to get the nylon pin mounted in each
successive hole.  By the time I had pushed in 3-4 pins, the weatherstrip was
nearly two inches too short without being stretched.  Before I lodge a
complaint with the vendor, is a requirement to physically stretch the
weatherstrip this much during installation normal?  I also had a heck of time
getting the nylon pins to seat in the door holes.  Any tricks with this
procedure?
Recommendations would be welcomed!

Rick T.