Quote Originally Posted by Hu Duck Xing View Post
Yup! When soldering a jack like that, or soldering wires to an amp chassis, I use my Dremel with the little ball grinder to rough up the spot and remove the plating. Then a small dab of liquid soldering flux, and it's a snap to do!
Yup. Thats good advice . Sometimes that's all you can do. If you have any doubt it is defiantly a good way to start to give that solder some teeth to bite on to.