I've looked but can't find an answer (probably right in front of my face). Can you create a 'Reset' Preset, one that puts everything back to where it was before the sliders were used to alter the image, (not a "zeroing out") but a way to put everything back and make it into a preset?
It's a little unclear to me exactly what you are asking for. At the bottom of the right-hand panel there is a "Reset" button that will reset your image to your camera defaults.