This is a metal question more than anything so I decided to start the thread here. I have been battling a gas leak when my tank is half full or more and I have finally determined that the brass fitting that is soldered on to accept the fuel line is leaking where it is soldered. There must be a void in the solder joint and I will have to remove the sender and try to re-solder the joint. My question is this, can I just heat the joint and melt the solder to seal the leak or will I have to melt out all of the solder and start from scratch. If I do have to start over what kind of solder should I use? I was thinking of trying a propane torch and just melting the solder since I don't know if I can get it hot enough with a solder gun. The sending unit is only a year old and in good shape. Any suggestions? Thanks.