Missing Rinse Kit and fill cap

The dishwasher is leaking at the bottom of the door. I just noticed that that it was missing the fill cap (AP430010) and the the Rinse aid kit (AP4368045) seems to be missing the treads and may be out of position. Would that cause the leak? I have already replaced the following and adjusted the door latch:

AP2038876 (WD08X10015) - Gasket insert
AP3798079 (WD08X10057) - Dishwasher door gasket
AP2038860 (WD8X228) - Tub corner baffle
AP2038859 (WD8X227) - Tub corner baffle

Before I spend more money on this I would like to know I’m on the right track.

Hi.

I recommend you to remove the outer door panel and run the dishwasher without it.
You should be able to see where is it leaking from.

Thank you.

Simon.