electrolux diswasher assembly filter

I have a 2 year old electrolux dishwasher. My husband attempted to remove the filter assembly and bent it. It needs to be replaced because food particles are getting into the spray arms. The assembly no longer sits flush with the bottom of the tub and food particles are getting by it. Is there a trick to replacing this part? Since my husband had difficulty removing the first one and bent it, I want to make sure we don’t wreck the new part.