http://www.moen.com/consumer-support/faq My dh says we have a Moen single handle shower posi temp faucet, it turns and does not pull. We have a problem: when the faucet is turned on it comes out cold, as you turn the faucet counterclockwise less and less water comes out and it never turns hot, eventually when you reach the end no water comes out at all. We bought a repair kit for the Moen "posi-temp". It was the one that matched our faucet The tool that came with the kit, will not break the cartridge loose. Because as the pic. A shows, the brass casing won't allow for the cartridge to be twisted and broken free. I have also included pic b as a front view for more info. How can I remove this cartridge?