Thanks a lot .
So here is what I did . Not the quickest way but very precise , and quick enough for my needs .
Upper and middle part drilled to 10 mm, lower hinge tapped to M10 .
So you slide the door in place , keep it there with the bolts in and lock it by screwing it down .
For the moment standard allen key M10x60 installed .
Gonna swap them to dome head bolts on final assembly
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