Hi Guys, Ive recently started to build my own stompbox pedals, and am looking to progress with this hobby. I have literally started out with NO knowledge of electronics, just a drive to build something that i want rather than paying obscene amounts of money for. I have built 2 A/B boxes for friends and have both turned out fine, and have SLIGHTLY increased my knowledge along the way. I am enjoying this hobby, however, i have hit a wall with something and am hoping to get a bit of advice from some more experienced members.... First of all, i have planned out my next few projects. These include a GGG Tuned Big Muff, A GGG Ross/Dyna Compressor, a GGG DOD ef440 clone, and a looper/blender pedal. For all the GGG pedals, i am (Hopefully) buying the PCBs only, and sourcing the remaining parts myself. They all look pretty straight forward, and GGG is a fantastic resource for these, however, i want to keep the Muff for myself. Im hoping to add a mids pot to cut/boost the mids. For the knowledgable, am i correct in assuming that i only have to replace the "C1" 0.1uf cap with a 22nf cap, and replace the "R2" 100k resistor with a 22k-25k Pot with a 1k resistor in series? Will the pot need to be Log or Linear? And secondly, im having alot of trouble finding a good wiring diagram for the looper/blender pedal that i am comfortable to proceed with. I have found some fantastic resources and ideas (Paralooper, B.Blender, Paramix etc.) but am unsure how to wire the Vero/PCB into a true bypass effects loop. I have Taken a true bypass effects loop diagram, and taken the vero layout and put it together. I just wanted to know if im on the right track and whether or not this will work if i put it together. Refer to image below (apologise for crappy PS skills, just did this quickly) If you need the original files for reference, let me know, but the Vero layout is a Buff N Blend, and the wiring diagram is taken from Beavis Audio. Any advice or help on either of these would be fantastic. I am working on increasing my knowledge as i progress. Thanks in advance.