My filter is have some issues getting started this year. We soaked the fingers in a degreaser and cleaned them off before opening the pool this year. I do notice that the "bump" arm doesn't seem to be moving the fingers. I know that I cannot be positive of this, but I've had the filter for a few years and know the "feel" of it. Also when we backwash the pressure is still high. Lastly when we re-opened the filter there was a bunch of DE caked on the bottom (it was immaculate 5 days ago) so this is all new.

My question is: Is there a screw or some mechanism to make sure the bump arm operates the fingers?
Do I need new fingers?
Do I need a new filter?