Seeking some assistance... I am having a bit of a problem with the tone control. When playing with the neck pick-up at 0-80% volume, the tone control offers a very wide spectrum, but if the volume is any higher it appears as if the tone control ceases to have any effect. Its almost as if the tone is wide open and no amount of fiddling can "add bass". This doesn't happen when using the bridge pick-up, so I am wondering if anyone knows why....is it a bad pot? is it normal? I recently had to change the tone pot but I used a CTS one.