Today I worked on installing the front and rear rudder pedals and the push-pull tubes for the rudders and the brakes. Other than installing the rudder push-pull tubes with the bolts backwards (from the wrong side, not head-first) all went well.
I also covered the cockpit side of the firewall with fabric. I contacted the factory and they are using "SunBrella" brand awning material on the factory-built S7's. The local upholstery fabric store stocks that material. I applied the material using a 3M spray adhesive. That seemed to work well. Sorry, no photos.