Hi, I have a question about the knobs on my 1963 höfner 185. They behalve pretty strangely and I would like to know if there's a way I can fix it without bringing it to a repair shop. There are a lot of stances on which the bass loses either almost all volume or all tone. And for all knobs but the top one (the volume knob for the neck pickup) putting it at 10 makes it lose all signal for the respective function. With the neck pickup volume it's the exact opposite, putting it at anything but a 10 makes the bass lose basically all signal. Now I could go into greater detail about how each knob behaves but I don't know if that would help. Can anyone tell me what the issue might be and how to fix this? Thanks!