After looking at your drawing it was exactly how i pictured the filter working. Upon futher investigation one of the two plugs was not plummed to anything. The sand I felt was filler under the pool. There was never a second connection, no balance pipe. I put the plug back in and backwashed the pump and it seems to be working.
Hey Wfin2004 thanks.
I am sure i will have more problems. Dont go anywhere.
Good Night Chesty, Wherever You Are