Nice looking work Cowboy. My local club had a "big bird" fly-in yesterday and there were some beautiful scale planes brought down from Dallas. One in particular, a white/red trim Waco from Peppino plans caught my eye. I asked the builder how he did the gorgeous covering and he said the frame was sprayed lightly with Minwax "polycrylic clear" then polyester dress liner was ironed on. He then sprayed more of the polycrylic to fill the weave. The color coat was just Krylon and it looked awesome. He used Frisket paper to mask the complicated stuff. He then traced around the red trim with the that auto pinstriping tape as you mentioned. He then hand-brushed all the pinstriped areas with more polycrylic clear just so it wouldn't come off.

I asked how old the paint was and he said about 4 months. I then asked if he had ever had any problems with fuel or the polycrylic yellowing on light colors and he said "never". He mentioned he had been building planes at a museum scale level (and using polycrylic) for a long time. I kinda felt like maybe I've been overthinking this.