RE: Ultra Stick 120 Lite?
The mods were pretty easy to accomplish. The firewall is just two pieces of 3/16" light ply epoxied together then mounted on the front. On the servos, I cut away the covering and built up new servo trays in the space by tracing their shape, cutting them out of light ply, adding a backing that I could epoxy on the back side of the fuselage side/top, and added triangle stock to each side so they would epoxy to the side of the fuse for stiffness. I didn't take any pictures other than what you see. If you look closely at the side one you can just make out the wood on the other side of the covering. I was able to mount the side servo by putting it in from the top so I was able to save the covering. I added the blue ultracote to the top of the fuse after putting in the rudder servo tray for the pull pull config. I then cut out the bottom of the fuse when I balanced it. I added about 3 1/2 oz of lead epoxied into the aft of the opening just in front of the back bulkhead. I have an PM somewhere with the instructions on how to build the extra firewall onto the front. If I can find it I will PM it to you.
I just remebered that I e-mailed the instructions from my home PC, so I will send them to you when I get there later today. I have also added a closer pic of the firewall mod I made. I used clear dope to keep the finish the same as on the rest of the plane. Took several coats before I was satisfied it was fuel proof.
BTW: If you can resist buying the G-23 please do. It just doesn't put out the horses that the G-26 does. I was lucky, I fellow club member crashed his US Lite on its first flight. Actually, it just flew away. Still don't know what happened. Anyway, I was able to buy the G-26 for $100 with only 1/2 a flight on it. It did sit in a field for a month or so till the plane was found and returned, but after cleaning, the engine is just like new.