Sink driving me NUTS!!

[14U]

I bought a travel trailer that has copper tubing throughout the trailer. It's pretty old, but I thought I would be able to fix it up. I got tverything in the trailer working good EXCEPTthe bathroom sink. It keeps leaking from where the copper tubing connects to the sink. No matter how much I tighten the fitting it doesn't seat propperly. I've never really messed with copper before, and don't want to mess it up.

thanks in advance

[Cass]

If the lines are 3/8" with brass ferrules you need to cut out a section of it then replace it with new copper and a new ferrule.

The old one is most likely distorted to the point that it will no longer work.

[hj]

if you are trying to screw copper adapters onto the faucet, it will always leak because the faucet has straight threads intended for a nut and gasket seal.