Brach,
I am having the same characteristics with my pedal. My problem is that sometimes I want the pedal by itself with the guitar direct, and sometimes I want it in a pedal chain or effects loop, both of which make it sound tinny. I will try the capacitor bypass you suggested above. What value would you recommend to make the pedal as agnostic to input source as possible, so I can dial in the tone once.
Thanks,
Howard