So I recently put in a second sump to my system. My only issue is the one fitting that attaches to my 1/2” flow meter. I need thread on both sides to direct the return, but the apex fitting is thread slip. I understand it is not NPT has anyone had any luck using a 1/2” fitting with NPT and use a lot of Teflon tape? I did try the NPT fitting but it leaks a little. Should I just load up more Teflon. I’m pushing about 115 gph through it