Plumbers fell out with general contactor then GC “stepped back” from our house to “save us money”. We are trying to finish the plumbing ourselves. Our shower has 2 regular shower heads and a rainfall head in the ceiling. We told plumbers who did rough in that we wanted to be able to turn one on at a time or all 3 at once. I have attached picture of the diverter valve that was installed. I ordered a Delta trim kit for a 3 way diverter. We installed and we get 1 shower head, both shower heads then the 2nd shower head. No setting will work the rainfall. I can’t find a 4 way diverter trim kit which is what the plumbers told us we needed. Any idea if a 6 way will work with what we have in the wall and still work all the heads? Afraid we may have to change the valve in the wall any advice is very appreciated!