Brown curling leaves - Flowering

[Fool In The Rain]

Hey guys, I know when I grow under lights its usually a sign of the light being too close, but these are outside in a green house. Its not on all the plants just this particular one. Is this normal? Strain maybe?

 

[Final Phase]

Got a feeling the plant is just reacting to the wire fence. Looks like it has gotten hot and
burned some leaves.

 

[Jack Harer]

Does the "burned" area start at the leaf margin and work towards the center vein?

 

[Fool In The Rain]

Does the "burned" area start at the leaf margin and work towards the center vein?

Mostly the tips, it does not seem to have progressed any further

 

[Fool In The Rain]

Pretty much ready to harvest, not sure what the brownin leaves were about but whatever it was it never went further and the buds look great. I asked in a different section though about harvesting buds at different times on the same plant depending on ripeness, but without flushing the plant and withholding nutrients, wouldn't that make those early harvested buds more harsh ?