When I try to fill tub, water comes out of shower head. I thought the diverter was faulty so I took the spout and diverter off. Now, with only the 1/2" pipe coming out of wall I filled the tub again and water still comes out of shower head. Any advise would be helpful.:confused:

This tells me the spout's probably OK. Two things could cause this problem. 1) There's a partial blockage in the spout feed causing back pressure, **or** 2) Excessive water pressure will force water up through the shower head.
My bet's on door number two. What's the house PSI? Regards, Tom

I am not sure about the PSI, but I do know that the plumbing has been re-done using that aqua pex pipe. It was redone in the last few months and the water dept put in a new valve and meter the other day.