Going through the basic check list first and then narrow it down.
UQ not too tight. Not only in suspension but on drawing in the ends also. Often people with cinch the ends in too much. (but it sounds like you had this dialed in fine)
Ridgeline at 83% perhaps you personally need a little more or a little less.
Diagonal slightly, doesn't need to be drastic.
Is the hammock long enough for you?
Some (I do) go as far as a foot or two higher on the foot end.
Pull any extra hammock fabric out from under you so there isn't a strange ridge bothering your neck and/or back.
Do you need to bunch up your jacket for under your neck, under your knees?
Some hammocks work and some don't. Just like any type of bed, it is very individual. I thought I was happy with my Eno DN.....until I made my tablecloth hammock. My son hated his GTUL, then he discovered the Eno DN and was quite happy, and then he went to the tablecloth hammock and was even happier.....and now for the past year it's been the hammock that John made him. You'd have to pry that one from his hands.
Some of us need more stretch, some of us need less stretch and on and on.
...it's sort-of like a Goldilocks game for some of us. You'll also notice real fast that many of us have many, many hammocks. We'll get together again and I'll see if I can't help out some where. Have you tried laying in anyones bridge?