Hey everyone! A few months ago, I traded a dunlop classic wah for my friend's beat up rat (He plays bass and got a bass big muff...). Its sounded pretty good and I was impressed because my previous rat didnt sound nearly as good. Last night, I flipped it over and to my pleasant surprise, foudn the serial number to be below 300,000! Keeley can mod it for $65. What are the sound differences? Right now, I like the lower gain settings and the cleanup, but its a little brittle sounding sometimes. Will the Keeley mod smooth this out? Also, does the keeley mod improve the bypass? Thanks!