A SLAM just takes time. Patience is one of the most important ingredients. As for the stabilizer, I don't recall where you are right now. But if you're CYA is at 30 or above, you can pull the sock for now so that you can stay at the corresponding FC level for that CYA based on the chart. Everything you said about daily brushing, steady psi, and backwashing made total sense. I think you're doing very well, and the pics prove it.