thanks. Regarding the finals, I bought the gear I’d need to calibrate the meter and auto-shutoff feature. I will calibrate all four C-21’s soon. I usually adjust the input meter to show high to keep me conservative. my latest conquest/project: With all my usual updates: New vinyl coming soon. Adjustable side tone pitch. Currently: New knobs, push buttons, and I/O on back. All new external screws and washers. PTO/display time calibrated. The old gal is really taking shape.