I just used LustreKote Flat Clear over my Skyraider that had Tamiya Paint in the can. It worked fine, but you have to to with two light coats of clear andDO NOTshoot theclearcoat heavy!

Two light coatswill "soften" the color paint for about 12 hours to a day, then set up just fine. A heavy clear coat will melt the color paint and you will get wrinkles/cracks.

I don't know ifTamiya sprayis the same paint as Testors spray, but I used some Testors brushed on paint with the same result.

Just test out the paint on a scrap first and see what happens.

For my clear canopy, I even used flat black Tamiya paint for the base coat of the frame because it grabbed the lexan great. Then used LustreKote paint for the color of the frame and fuel proofing. It worked great.

Good Luck