For glueing the canopy to the frame, I built a home made jig from balsa and MDF board. it works great, and serves as a great paint fixture too.

Start by cleaning the canopy with soap and water, followed by thinner/degreaser/alcohol/whatever. just clean it.

Rough up the glueing area with 80 grit. be careful here, you have to go in about 3/4" from the edge. Rough it up good but don't go too deep.

Now just mix up some good slow cure epoxy and micro baloons, paint on a fairly thick bead, and install the canopy on the frame. it should have an overhang of around 1/4" all the way around. this isn't really critical, but if it's cocked, SOMEBODY will notice (we're pattern guys after all).

Now just tape it down and take care that it's secure all the way around, but not pulled too tightly in any one spot. it should be evenly glued all the way around.

After it cures overnight, remove the canopy from the fixture, and sand the edges flush with the frame, putting it on the plane and adjusting as necessary to achieve a good fit.

Pretty huh?