Adjusting Ebrake!!
Like you I did the adjustment, but it only helped so much, the e brake pads dont look so good so I'm attributing that as part of the issue.
I got on it more than a few times ( pulled it 80mph and did a few spins) and ever since then has barely enough grip to keep the car from rolling. Yes very stupid. I still cant believe I had the ***** to do that and came out of it with no issues!
Now it's just a parking brake





