When you’re working on a new pedal or rejigging a design, the amount of brick walls & frustration you hit can be really hard to overcome. I’ve left pedals & designs alone for weeks having hit a block & then come back at them with fresh eyes. You can get everything spot on on paper but in practice something just isn’t right & it can drive you crackers. Well, I’m currently at this point with a pedal design. I’ve rejigged a tone stack (tone control) half a dozen times without getting the exact results I’m looking for. Who said pedal building was easy? Back to the drawing board & more hours of frustration.