ORIGINAL: Capt G
Won't know about the muffler until it can be tried on the Spit. They are still on BO. Love the tailwheel unit. Who sells it? I discovered that the pictures showing the fuse servo installation are mislabeled and incorrect. The way the tubes were installed in my plane put the rudder servo on the outboard edge. Very careful attention is required during servo install to insure they do not interfere with each other. I also had to cut some of the bulkhead away for the rudder travel.
Good to see that you are using Hitec servos