Lunge / Equitation Lessons

I had two back to back lunge lessons, Mon. and Tues. Today I am sore! But in a very good way. The lessons were both on Rogo and he was a very good boy - willing, responsive and easy going.
I want to capture my insights and what I leaned while it is fresh in my head.

1. I'm still (again?) weighting my right seat bone more than my left. I've fixed this before. How does it keep slipping back in???
2. my whole right side is slightly off of where it should be when I'm going to the left. My right shoulder wants to turn out instead of staying in line with Rogo's shoulder. To fix it I have to turn it in until the sensation is that it's turned much too far in (it really isn't), and I need to think to turn it with every stride at this point or it goes right back out. My right leg, going left, continually creeps too far forward so that I end up somewhat blocking Rogo's shoulder. This means if I put my inside leg on to push him into the outside rein I'm also blocking him from going into that rein. Of course of all this is inter-related and each misalignment feeds / reinforces the other. The good thing is that when I fix it there is a gratifyingly immediate response from Rogo - he stays on a nice bend / circle much more easily and my poor lunger doesn't get hauled around trying to pull him through four corners of a square :)
3. I'm still holding with my knees at times, although this has improved quite a bit. The result of letting go and keeping them off of him is a beautifully forward and happy horse, swinging along in his trot. I mentioned in an earlier post that it was my coach constantly saying 'forward' and building the muscles and muscle memory that finally got us forward. That is only partly true. Another big factor was freeing Rogo to trot forward by taking the tension out of my body and getting my knees out of his shoulders. I thought he was soooo sluggish in trot, but now I could almost say he is sensitive in that blocking him or holding tension in my body immediately slows him, and puts tension in his back. This is true to a startling degree and I wouldn't have known it if I hadn't felt it. Practicing the 'right' and 'wrong' way on the lunge really brings it home and reinforces what I'd already strongly felt. My teacher would get me to tense my body and / or grip with my knees and instantly I could feel Rogo's back stiffen and his gait go slow and lose it's nice rhythm. Then she'd get me to relax and take my knees off and in about two or three strides he'd be back to a beautiful rhythm and forward trot. 
4. I need to lightly let my leg, with heels down, come on and off Rogo with each walking step.
5. I need to bend and unbend my knee more when posting, so that my leg doesn't go forward as I rise. I need to really keep the weight in my stirrups so that I don't grip with my knees, as well as putting my leg lightly on as I sit and off as I rise. 
6. I need to give my upward transition aids as a light signal that lasts one stride, not as a hard, driving aid that stays on until I get a result. If it doesn't work get my rhythm back and repeat until he understands.
7. Sit very tall and weight my stirrups in sitting trot. Don't lean behind the vertical. Relax and follow him. Also, it's okay if my legs move some; trying to hold them still will make things worse (this is for both rising and sitting).
8. Remember to weight my stirrups more (hmm, a theme?) in canter. Relax and follow him with my legs instead of pushing him. Apply all the previous (body position).

Those were the main things I learned. Now to get practicing.