Quick question -- is the yellow you used more of a chromate yellow or an insignia yellow?
The exact yellow I used was P3 Moldy Ochre ( I may have added in a small bit of white) plus I did mist coat over it with a mix of the base coat (Tamiya Flat White and Deck Tan)
So I guess more like insignia yellow which them gets faded a bit with a mist coat?
I actually painted it on with a a brush. You probably could airbrush them on, but I never tried since you can hide the brush strokes if you are careful when painting it and use the right consistency
Same with the red striping except I used P3 Skorne Red. One thing I do to help the re go on better is do a first layer of moldy ochre it covers over the white base better without streaking, then do a layer of the red