White Widow Autos (first-time grower)

Not much difference this week, but I guess that's what happens in the last few weeks. Plant 1: About a week away from harvest. Some top pistils still turning orange. 15% nutes yellowed leaves, and this is by far the most resistant plant. High PH won't go away Plant 2: Harvested last week. Hay smell going away, and it smells a little like weed. A few days from curing Plant 3: Less than a week away from harvest. 30% nutes burned it. PH finally normal Plant 4: Still sensitive to everything. PH Down worked a little