Some more messing around with the rollbar. Tried in multiple attempts to get the small twist out of the roll bar but without heavy machinery this is not possible.

Overall the position is good but as you see in the image below, the pilot side foot sits high on the front.

I used a fishing line wire between the two vertical posts of the roll bar and hung some plumb bobs on 3 locations over the top of the roll bar. This is the best way to check the 90 degree square on the canopy deck. Holding a square against the vertical posts is not accurate enough as the weldings sit in the way.

Update Dec 2020: After leveling out and squaring the roll bar, it showed that actually the pilot side has to sit flat which makes the passenger side front to stick up a bit. I will make a spacer on the passenger front side to fill the gap.