Hello I have recently replaced a price pfister cartridge to replace our old cartridge that was no longer working and since changing the cartridge I no longer get hot water I've messed with the control plate in the front even taking it totally off and still no hot water. I've also checked the hot/cold shut off's and nothing out of place. I get hot water in other parts of the house just fine just not in the shower. Any tips or suggestions would be welcomed.