I've been in contact with a great guy here....JimF, who has sold me some kits I was looking for.
Recently, he told me of a method he developed for painting invasion stripes that seems to take some of the hassle out of the process.
Yes, some modelers here may use the same system, or have other, even easier methods. But as invasion stripes have stymied me in the past due to colors bleeding under tape etc. I thought that sharing JimF's ideas might help some others here.....and give a chance to hear other ideas.
I'll just try to lay it out with as few pronouns as possible.
Before attaching wings to fuselage(kit permitting), with no paint other than primer, and having a white primer base for the stripe area:
Paint the entire stripe area white....overspraying the area to each side, which will form the outer borders of the stripes when final paint scheme is applied.
Carefully mask off the stripes which are to remain white then, (and here's the cool part), paint the whole area agin in white. This will seal the edges of your taping and prevent bleeding when you shoot the black.
JimF likes the Tamiya masking tape as many others do here.
Be sure to let your coats of paint cure properly.....then without removing any masking.....shoot the black stripes over your sealing coat of white.
Now you can do your main assembly and paint your final colors (cover your black stripes!)
Sounds like an absurdly simple way to avoid color bleed