I ve been using Much More racing solder lead with 30watt solder and it melts with no problem. Now I wanted to replace the 12awg wires that is soldered to my esc....the problem is my 30w solder cant even melt the factory solder....so i was thinking if i get a better solder iron i can probably melt it and replace the wires...so I just want to solder the new wires with the same quality solder lead use by the factory.