Sounds like you have an earth issue to me. Where the earth wire attaches to the bridge could be the problem. hard to get enough heat to a big chunk of metal to make a good solder connection.
Love to see/hear the finished article
Sounds like you have an earth issue to me. Where the earth wire attaches to the bridge could be the problem. hard to get enough heat to a big chunk of metal to make a good solder connection.
Love to see/hear the finished article