I have just installed a peerless faucet and shower head in my bathroom. It is the kind that has the single handle control for both the water pressure and temperature. I got it all hooked up yesterday and went to test it and when I turn the water on, it comes out the faucet as well as dribbles out the shower head as well. If i pull the plunger thing up on the faucet, the shower operates fine. I am using 1/2 PEX to do all of my connections. Does anyone have any idea why it would be doing this? Thank you for your help!