I gutted my bathroom and installed a new vanity and sink. I replaced the water supply lines that run from teh supply pipes to the faucet with the 12 inch braided connectors.
I've wrapped the water supply line threaded end with plumbers tape, and hand tightened the water supply line, then tightened with a wrench a bit more (half a turn or so). Its leaking!

I've undone it and re-tried 3 or 4 times now. The leak is right at the junction of the nut and the braided supply line (part of hte supply line). What do i do? Am i tightening it too hard? Not enough? Am i not using enough plumbers tape?

Thanks.