i’ve recently purchased a second hand Big Muff Pi, it worked fine originally and was great but now when i turn off the pedal sometimes the clean signal drops in volume, then i bump the big muff with my foot and it goes back to normal. it’s very frustrating from a live point of view, my signal chain is TU-3 -> OD-3 -> Big Muff Pi -> Widow Maker -> Nano Pog -> Neo Clone -> DD-3 -> Marshall MG100 HDFX. i’ve isolated the big muff and the issue remains so it is the pedal. please help!!