adjusting boot alignment - D2 S8

[rs32]

Is there a set procedure for aligning the boot panel correctly rear quarter panels (even left/right height etc), and/or is it even possible to change the fine-tuning of bootlid alignment ?

The scenario is one side is slightly low and other slightly high. you can see this at the top, mostly where the bootlid reaches up towards the rear screen, but also on the lowest part of the bootlid where it meets the rear bumper. One side approx 3-4mm higher than the other.