Tileable UV's ?

I was curious about getting tileable UV’s - I used the standard UV calculation, which I assumed would do this, but it seems some are mapped as 90 degree rotations of others, and I end up with seams.

Any tricks or hints?

rotate it:)

hmm… was hoping to not have to rotate on the order of 1k quads by hand…

I think I may have sorted out the trouble, or at least a suitable fix.