Dave, do the side pans move front to rear? I noticed that you have them attached front and rear with wire inserted into brass tubing. I also noted that the solid wire in the middle is inserted into a square channel, which made me thing that if the square channel was wider then the wire and if the end wires were narrower than the brass tubes, then the side pods would move, relative to the central chassis piece, controlled by how much free space there was between the central wire and the square channel. Both Dennis and Chris have mentioned side pod movement in the past, as a way to isolate body movement from the chassis, that's why I'm asking.

Neat looking chassis, very clean!
Allan