Found it, cracked tee under the shower. I was at the dealer getting the back up camera replaced and I had them look at it. The tech comes out and says ' under the shower in the corner somewhere, we will have to take the shower surround out to fix it'. I tell him no way that shower is coming out without tearing the whole bathroom apart. He tells me he could get it out no problem. I don't think so, that bathroom was build around the shower enclosure just like some houses, before the walls go up. I told him let me see if I could find it and fix it myself. I went home, took the drawer apart that backs up to the shower, cut a access panel to access the fittings. there was spray foam all around the pipes and fittings (i guess to stop movement) I took all the foam out and there it is, the broken fitting. Hacked it out replaced it with a push in tee . FIXED, 1 hr., shower intact. You think I should foam it again? Thanks for all the help!