Originally Posted by
dn010
Those PDFs are good but don't tell you to remove the strut and open the door as far as possible. It's important because the further you can get the door open, the less torsion energy the bar will have. For a bar as over adjusted as yours there will still be quite a bit left but any relief makes things easier. The only down side is you have to keep reinstalling/removing the strut to test the bar adjustment.
Because I've never had any help, I've always done these adjustments and removals by myself without a jig using a long handled L shaped hex tool with a jack handle over it however DO take Rich's advice and seek help, it isn't easy and it is possible you can shatter your rear windscreen if you slip regardless of method.