Are you giving yourself enough space to get in there and water those girls? You may have, but from the scrogged photo, it looks like the screen doesn't leave a lot of wiggle room to reach in there or water. Also we can't tell how you're watering these girls from that pic.
For us having a little extra space between canopy and pot was essential. That space helped us water the plants more easily, and also for pruning or removing dead leaves.
We also had re-vegged our girls and found they had thin stems. We noticed over time the main stems grew thicker, but we did remove quite a number of stragglers to get to that point. Also for our grow, We were not using a scrog technique.
cheers,
MM's