Custom door frame .
Left and right 50mm of play
Top though no play .
Company and myself measured via FaceTime so not sure who is liable !
Concrete lintel at the top so no joy there
My options are only 1 that I can see . That header piece needs maybe 5mm sheared off it . I can’t take lining apart as glued .
How can I sheer it ? Multi tool will take forever and be a right bodge !!