Just installed a new Well-X-Trol 250 well tank with new tee. Wrapped tee male connection with teflon tape and screwed it in. Completed the installation and all looks great except a very slow drip at well tank/tee connection. I guess I need to screw the tee in further except I am afraid another full revolution will be too much. Maybe I'm being overly cautious.

Any suggestions? Should I use a thread sealant and scrap the teflon tape?