I have a Superpump and multi valve to a Hayward DE filter. I just changed the seal shaft and cleaned out the basket in the pump housing after vacuuming. When I restarted the pump, the PSI went down by 1 or 2 and I can see air bubbles and swirling of water through the pump housing cover and the elbow to the multi-valve. Additionally, the jets seem to be more forceful in pushing out water and I can hear what sounds like small pebbles going through one of the lines. Not sure what I did wrong or if I caused some air to be trapped from the vacuuming. Maybe I need to let some air out of the top of the DE filter until some water squirts out? Thank you.