Okay, so I just installed a new Hayward EC-50 DE filter on my Intex 24' round, and can't get the fittings between the pump and filter canister to stop leaking. The leaking fittings are, the one that screws into the filter canister, and the one that screws into the pump outlet. They came pre- installed from factory with teflon tape. The moment I fired up the pump for the first time, I had water every where. I proceeded to tighten the fittings a few more turns, with no luck. Next I removed the fittings, cleaned all of the teflon tape, and this time I tried PVC thread compound, this helped but I still have a leak. Any suggestions???