^ This. Air wedges make lifting or prying things so much easier, with little risk of damaging the lifting area.
The big drawback being they turn into a round ball at maximum lift, so become unstable. Adding a block of anything to take up most of the gap and lift up to 25mm works best
Good idea, that could work.
Any tips on getting the door to the right level? I'm guessing some shims/packers below.