So I found out the the decal manufacturer that I'm using on my group build has really nice decals, nice and thin. But the downside is that they are a bear to move after a few seconds, and if you manage to fold them over while reposition, you can't get them apart anymore. On the first paint scheme I tried, I screwed up the roundels, using the wrong size on the wing underside and could not relocate both (one worked, the other tore). So I repainted to a different paint scheme and all went well except I destroyed the registration codes again on the wing underside.
So, does anyone have a couple of Z's and an A, as in ZZA, in approx. 3/4" black lettering? Actually I have an A from the original decal set but I mention it only to make sure the three letters are consistent -- I can do without it.

BTW, the decal set is Mike Grant RCN Sea Furies in 1/48.
BTW, all those are free TrueType fonts, so I'll post them here on the website in the next couple of days.
Bingo! I search the interwebs and found not only Amarillo, but also RAF WW2, RAF Standard (post-war) RCAF and German WW2 Aircraft fonts. I printed ZZ in 42 pt, made a stencil using sheet masking and sprayed it on. Turned out pretty well. Thanks.
I do not have anything that tall. Another option is to download a font called "Amarillo" and print them, especially since they are black. That looks like a similar font, just have to fix the corners on the Z
http://www.fonts4free.net/amarillo-usaf-font.html