Just bought this 1962 Tennessean. In very good nick and sounds so good. However, the mud switch is too dark ( on both settings). It’s unusable. I had a 2013 6119 HT and used the brighter of the roll offs permanently. My question is, what can I do to give me a mud switch that I can use? Do I get a replacement switch or just different value capacitors or what? I have little knowledge in this area and any advice is welcome.