Yes...i know and i thought about this bit for some time. It was a compromise of having registration crosses under the side rails so the stencils could be aligned or continuing the black up the front edge and losing your corner to work from.
registration is so crucial with these that i felt a white gap that SHOULD be covered by the lock down was a small price to pay... and anyway.. if this was a Clay Farrel job then it can be easily fixed with a Sharpie..

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