I had a broken handle on the top of my Hayward S244T.  I had the local pool shop rebuild the multi valve Key Cover and Handle Assembly.  I also replaced the sand and the Lateral Assembly with Center Pipe.  The pool is functioning great with no leaks except I now have an annoying noise where the top assembly clamps to the filter - sounds like air or gurgling water.  I see no air coming into the see-through strainer cover on the pump.  My pressure is at 14 - I'm getting crossed eyed googling this issue - any suggestions please???