Hey Al!
Sorry to hear about your nute issues.
They are indeed showing what APPEARS to be slight nuteburn.
But they are also showing what APPEARS to be calcium deficiency.
Then again in this photo puzzles me too, it's your 'supposed to be Indica but reminds you of Sativa' plant :
Can you get us a close up of the part I encircled?
I read somewhere that Sulpur deficiency CAN lead to thinner then usual leaves and also new leaves that stay small for there age.
All of this makes me wonder :
-what soil are you using? do you have some specs on that? (pH!)
-what kind of nutes did they get?
-do you feed them tapwater? if so what's the calcium content?
I used to words CAN and APPEAR in capitals to stress the point that problems with the soil can prevent normal nute uptake. In such a case the nutes would be present but something is preventing the plant from uptaking them....and then the last thing you'd want to do is add more nutes.
The soil issues I'm thinking of are : overwatering, wrong pH and/or eC.
Can you get us some data on the nutes and soil please?