Katsup and Mustard.

[Kilted Cole]

true. If, for example, the two stripes you in question are the a and b in an abac tartan (true of the mackenzie and quite a few other black watch based tartans), then the tartan repeats a b a c a b a c a b a c but the pleats need to repeat a b a b a b a b. There is no way around having pleats that alternate in depth from shallow to deep. This might or might not be acceptable depending on the actual distances.

abacabacabac.........00001111000010101011100001001 0110101001010101010101111000001010101 ?

[The farqcom]

I like the look of the alternating stripe! Something to keep in mind for the next round.