I have one of Jonesey's SG harnesses laying around. I wonder if I should install it? I already have a set of Castle PUs in this guitar, and the tone improvement was amazing. Will his harness really help that much? The pots in there now are 300K, and the caps are stock Mylar disks. But the guitar has a nice meaty sound to it, with great complex highs, mostly due to those pickups. Should I expect a tonal change?