Took my first pump out to see if the screens were clogged up. One screen was Completly off and floating in the fluid, and the other was bent up. Neither will go back on the pump. Two questions, can I get the replacement only screens from PP and should I flush out the lines since the one screen was entirely off? If so how should I do that? Didn't bother taking the second pump out as I'm sure the screens are probably in need of replacement as well.