Uh oh.
Are you using a Mondeo lump and oil pump?
The Fiesta/Scort oil pump is angled inwards to clear the chassis leg. The Mondeo one sits straight.
Not sure whether or how it's possible to get around it if that's your problem.
The Mondy oil pump is a straight swap for the Fiesta one but it's a lot of work to swap if there's an easier solution.
/Munk