Hi Cadet Chuck,
Could you post a pitcure of this streaking? I've never seen that although my Alclad often has that kind of swirly appearance with the two colours. Could it be in the way you apply them? I mean like to slow and lite, for example? You'd think if it was your methology though it would be like that with all of them.
I was going to say though as for masking just today I was working on an airliner that I masked like 9 months ago! Haven't pulled the tape yet but I'm confident it will be good! IMO once a mask is on if it's going to pull it's goin g to pull wether you leave it on for a day, a week or a year!
I did have a problem masking on alclad once though. I sprayed the high shine aluminum and then masked off for a bunch of dark aluminum panels. The first coat lifted like crazy. I get it in the end but it was a bit of a nightmare!!
That's the only bad experience I've had though.... *knocks on desk*