Cleaned up contact-point noise, no need for nubbin any more, and prettier cabling

Initial-settle tuning for calmer start helped; resulting level display improved

Fixed performance where I hadn't been testing: on perfectly level ground. It was sloowwww. Fixed that by getting legs off the ground, make it start a little bit off kilter.

Really add the warning

updated to do some debounce when settling, it gets better levels faster now.

Published blueprint