Here are the awesome "Rubber" chevron track pads Woz printed for me. They replace the metal T-74 pads.
I made a paper template and cut out and glued 5/32 plexi glass down both sides. The urethane hulls can sometimes get soft and warp in the hot sun. I did this from experience with my A1 cast hull, it bowed a little.
The metal hull has screw holes in the sides to catch the top of the tranny cover so I made plexi brackets and screwed them into the hull for support.