
Photos would be good - but i think there is a lip that extends from Floor Tray/ Catch Tank under the chassis with another locating/overlap lip attached to underside of chassis? Guess a fixed rubber seal to Catch Tray or Chassis wouldnt hurt along the bottom either.
Rubber Gatters/Seals on bottom Tiebar/chain Run?
But yes, Picture or drawings (crayon acceptable) would be useful to most of us

We gotta get this right. SO really need to help each other at this point, not try and be secretive!