Hi Nortman,
Unfortunately I haven't been able to source any additional original drawings.
I own a Skyfox CA22 Tailwheel and as far as I know there was never a service manual for it. The Gazelle service manual will be almost identical to the tailwheel, so aside from the landing gear, everything else should be the same.
I'm rebuilding my Skyfox too, and I have an extensive part list and 3D cad drawings of many parts (firewall, floor panels, side windows, and so on... ) . At this stage I won't be publishing all this info in bulk, but if you need anything specific, feel free to send me a PM.