Recently replaced a moen shower faucet cartridge (1225) that was leaking. The leak has now been fixed however now I'm only getting about half the water pressure I was previously getting. I took it all apart and made sure there was any blockage, and put it back together but same result. Thought maybe I had a bad cartridge so I bought a new one and installed that...but again same issue, low water pressure. I also replaced the shower head and that wasn't it. Any ideas?