We have a Maytag dishwasher that has started to not get the dishes in the top-level clean (primarily bowls and glasses). We end up with tiny deposits inside of glasses - almost like sediment and not original to the glass or bowl which takes a little scrubbing to get out.

I've pulled everything out down to the filter/impeller and cleaned it out including the tube that feeds the upper arm. Nothing major present and it didn't seem to help much.

I've read water level might be an issue causing this and I just opened the door after it filled but not sure how deep the water level should be. Can someone give me some guidance on that or what else could cause this?

Thanks!

Scott