Thank you so much for your in-depth answers!

Christopher, I will try the banded GM´s. And also, I know what you mean with the feeling in the hips when I screw my feet into the ground, but I´m having a hard time keeping that feeling through out the movement. I guess it will come with practice.
Katilin, I´m looking through the Jill-videos and will try the different mobility wod´s there.
I also noticed that I don´t have the strength/endurance to keep the belly tight for more than 1-2 reps in the squat or the deadlift. When I come up from the bottom positions I completely loose the tightness and I have to start all over with the bracing. So I´m certainly doing something wrong with the breathing/bracing I reckon.