Thanks to all your advice I got our pool in this weekend and plumed. I have a few small leaks that I can handle but the biggest is the leak between the filter head and body. We have a Jacuzi 190 sand filter. Leaks show between the thread and body for dang near half the filter. I've tried draining the body and then spinning it so it fits nice and tight, but the leaks keep happening. When I had the whole deal apart earlier today (had to replace the sand) I noticed there is no gasket between the body and the head. Is this normal? Is there supposed to be a gasket that seals the body to the head?