If you guys are going to do show and tell at Austin perhaps we can convince you to let all interested see how things are done on other slides. So far based on what I am learning here the difference between the Prevost slides and the Newell slides is the seal does not have bonded in corners, nor is it a complete loop.

The differences may not be important and if the location of the air supply tube can be resolved owners of Prevost slides may have a much less expensive alternative to the fabricated, closed loop seal. One difference of significance however is that the Prevost seal comes with a double sided tape for adhesion to a stainless steel mounting surface that completely surrounds the slide opening. There is no way to screw the seal end in place unless someone is willing to drill holes in their coach.