They look fine to me. :jointsmile: If the 'problems' showed, after switching to 12/12 and changing the nutes, chances are it's adjusting to the situation.
But, when I make my bloom nutes too strong, I get slight leaf-edge curl like yours. (the edges look almost sharper)
Keep an eye on her after the next watering, and after next round of nutes. The sativas may have slightly different nutrient needs than the others. (may need to adjust nute strength) No way to check run-off ph?

The days before you put her into flower, when did you last give the veg nutes? Did you start the bloom nutes the same day you put them into bloom? (could they be a bit overferted from the two?)

How does the Open Sesame work? Worth getting? I use the 3-part Fox Farms (G-M-B) but am curious about their other products. Also thinking of getting the Sledgehammer for salt build-up.