I have Frigidaire Gallery dishwasher. It gradually stopped washing dishes and started spraying a thin layer of grease over everything. I cleaned filters & sprayer arms, checked the float (continuity in on/off position is fine and it goes up& down with no obstruction), ran dishwasher through several cleaning cycles with soap and vinegar and replaced a water inlet with a new one. It works a little better but still 1/2 of dishes come out with specs of dirt that were not on them when I put them there, some of the dishes get a grease film, but not all. Also, usually only about half of the soap gets used up, regardless whether I use a tablet or pour liquid dishwasher solution, whether I put them in the soap container or toss on the bottom. Could you recommend what else to check or suggest what might be causing the issue? Can it be that the drain pump drains more than it is supposed to?

Thank you,
Sergei