Drive on ramps
Crawl under with big air gun and a 19mm socket, plus one new washer.
Find the one missing the washer
Hold gun to bolt in reverse, squeeze trigger
Put washer on bolt, thread in by hand to start
Hold gun to bolt in forward and squeeze trigger
Smile cause I'll be off your back
Crawl out and take car off ramps.
Clean up and have a coffee to warm back up.