Hmm, unfortunately that's what my gut was telling me, too.
I don't have any particular attachment to the Yak 9T, so I'm looking to just try a bunch of new techniques on it, and I didn't pay too much for it, so I don't really care if I mess it up.
My idea was to paint the plane in its actual colors before paint. For example, prime the fabric sections with something like Tamiya buff or gray or whatever, then do the wooden wings with something wood-colored and the metal parts Alclad polished aluminum. After that, I was going to put down a clear coat, spray the paint on thin, post-shade the panel lines and then scuff, chip, etc. I thought that might give some interesting tonal variation to the paint, but it is probably unrealistic in the end.
Which brings me to a general question - does paint fade at different rates on metal vs. cloth vs. wood? I am thinking not, but would like to vary it slightly.
Either way, I want to weather this one pretty hard. Maybe do some salt weathering or whatever.
-BD-