Toilets, Sinks, Showers, Tubs and Disposals - Very slight leak after installing new bathroom faucet

Hi, I recently installed a new bathroom faucet which seemed to go quite smoothly. After turning on the faucet, I can't see any leaks but if I place a paper towel between the locknut and the tailpiece that goes into the drain underneath the sink, the towel gets wet spots. I made sure that I put a ton of plumber's putty under the flange and have over tightened the lock nut underneath thinking that could be the problem. There is only about a quarter inch gap between the lock nut and the tailpiece so I wrapped teflon tape around it but am not sure if that is a good idea. My thought is that the rubber gasket that camw with the faucet is more rounded than the one that was removed and that water is leaking through the holes in the flange and down the threads of the flange. Can anyone offer any suggestions? The teflon tape does seem to be helping but I would like a more permanent solution if one is available. Let me know if you need any more info. Thanks.

Remove the teflon tape and just smear a little silicone caulk on the washer and threads, and snug the slipnut down. That should seal it.
Good Luck!
Mike

Thank you. I put silicone caulk everywhere - on the threads, around the washer and even between the bottom of the sink and the rubber gasket. If it still leaks there has to be something structurally wrong because I followed the installation instructions precisely. If I'm missing someting please let me know. Thanks again Mike.

When you're dealing with a drain assembly, first make it up and snug it up without tightening anything too tightly.
Once you get it all semi-loosely together, then start tightening it up from the tailpiece and work your way to the wall drain. Keep everything as straight as you can with as much slope toward the drain as you can.
Good Luck!
Mike

Thanks again, I just tested the drain and no leaks! I actually think now that the trap was possibly not put in straight enough causing the rubber gasket not to fit as well as it should - not sure though. Either way it's working fine now. Bob