Sump pump filter
Yes, you still can buy the pump head seperately from ShurFlo. It is the ShurFlo 2088 replacement pump head and runs around $50. I got mine in August 2011 from amazon.com. It is the sure fire way to fix that shower drain pump. It would be a mistake to leave the screen out. The debris would jam the pump and diaphragms in no time. If it is too hard to reach the screen cleanout, you can take the wardrobe floor out with three easy screws to get to it. Of course, I only know this location as I have an HD. I think the QD, HD, are the same as far as the pumps go.