I have had a problem with the fingerboard of my Carruther's SUB-1 since I purchased it used last year. The E-string in particular has a pronounced growl; more than tasteful and not controllable- from the F to the G#. My tech has taken some material off the neck, yet when I stop the string at the first and last position on the neck, it doesn't seem to have much bow, my tech seems to think it has a rise in the first couple of positions of the neckand this is causing the buzz. I just put some new D'addario Helicores on, the sound is great but the buzzing is very annoying. The G-string is also very low. So low that it rattles when I bow. Anyone have experience with these basses????