>Did the job by hand, with nothing more than a pair of sizzors,
>a box of straight pins, & a needle & thread.
>I just cut the old screen away from the zipper, then pinned
>the the screen into position, smoothing it out as I went, then
>sewed it to the edge by hand.
>Nothing to it!
>It took a couple hours.  I sat on the edge of the upper bunk
>for most of the work.

We did the much same thing. I did a cardboard template of the screen and cut a
piece of no-see-um mesh about and inch bigger around. My wife machine-sewed seam
binding around it and then hand sewed it back to the canvas. The last 18 inches
or so took the two of us to do -- one on either side passing the needle baqck
and forth. A PITA but the results were great. It can be done --- and very
cheaply too.

Cheers,
Doug Alcock
'84 Westy
Toronto, Canada