That sump design seems way off with the baffles.
*edit:
Can you post a picture of the full sump from the side, so we can see what baffles you have and what heights they are? That last section the pump is in is very low for some reason.
*edit:
Can you post a picture of the full sump from the side, so we can see what baffles you have and what heights they are? That last section the pump is in is very low for some reason.