OK, I have a Astral millenium filter. I replace the spder gasket and big round that goes around the top. And it still leaks out of the backwash outlet.... but not when its in recycle position????? and when I put in in backwash position it has very little pressure. It comes out fast in the filter position then in the backwash position.... I am lossing my mind with this freakin thing.. It is an 12x25 above ground. any HELP would be great, thanks.