Was going to post this a few weeks ago, sorry--if you are using Newman frames to re-stretch, bar clamps are sweet.
I put a manual frame down with the prepped side up, put the newman down with the mesh contacting it, put a bar clamp on each corner pulling the newman towards the static, and you can then adjust the preload on four corners.
Caveats: Too much chem tape = not enough free mesh to glue a 23x31 to a 20x24.
Table you glue on must be within a couple inches of one direction--i.e. either 30-32 inches wide, or 22-24 inches wide.