I am almost embarrassed to post this but it is killing me. I installed a new pump and filter this weekend. At the points where I have to screw the 1 1/2" pipe into both the pump and the filter, I have small dripping leaks. I have unscrewed and rescrewed these connections a few times each and still cannot seem to get rid of the really small leaks. I am using standard pipe tape and I am tightening the **** out of the adapter! Any suggestions? I have heard mention of "pipe dope". What is it? Does it work better?