I have a '68 lead spec 1987 clone and the midrange is almost unbearable. The G string (784Hz range?) is audibly much louder and more pronounced than any other string, although not really limited to that range as the notes are still louder as the G string gets fretted higher and higher. It's as if the G string has a boost and the other 5 strings sit evenly in the background. It's not a guitar/pickup problem. It's definitely the amp. If I turn the mid pot to zero, it eliminates the string db descrepancy. But overall, the mid pot has little bearing on tone adjustment. Full sweep bears little change. All other controls behave normally. I typically about dime my mids on these plexi circuits. It does have a MV installed, however it behaves the same regardless if in use or not. Has anyone ever experienced this? Will changing the slope resistor and/or treble cap help alleviate the pronounced mids? Currently it is the stock 33K/500pF combination. Could it be just how this particular OT is filtering frequencies? It is a Merren OT, but I don't know the model # at the moment. I just assume the builder used the correct spec for this circuit. Any ideas?