Had our leaking flat garage roof redone (most of the joists replaced, new boards, new felt, new wooden fascias) by a local, recommended roofing company. He outsourced to a different company that specialises in flat roofs. They’ve done the roof and gone and it’s great EXCEPT it looks wonky in one corner (see pic)!! Is this normal or should I complain?! Is it too late to fix? 😭