I have a Godin LGX signature, playing it with a new Vox Night Train 15. Because the Vox is a little too glassy in the treble for my liking I was trying to knock it back with the tone pot on the guitar. It was going from very muted to overly bright, by the time I got to 1/2. By the time it's at 3 it's like an ice pick. Figured it might be the pot, so swapped it out for a new one. 500K linear, same for same. Exactly the same problem persists almost no change in treble quality belond 1/2, way to bright. Sound familiar? Any ideas? Try a 250K pot? New value cap? Many thanks for your thoughts.