I love my new VPM-1! I purchased the kit. The build instructions are extremely clear. I have some experience soldering circuit boards and it came in handy since some of the pads are fairly close together. The circuit worked flawlessly upon powering up. The calibration is a breeze. The pedal mod has significantly improved my tone as compared to the original pedal. I didn’t realize how much it was sucking the life out of my tone. The VPM-1 dramatically improved my sound. I couldn’t recommend this pedal mod enough! Count me in as a ZPL fan!