Haven't done anything to them, other than air up the tires. Wanted to keep them but work is starting to slow down for me but the bills haven't... I hate to break them up since they’ve been together for so many years. So please buy both https://ratrodbikes.com/forum/index.php?threads/picked-up-an-old-swing-set-today.109379/ $800 each shipped from Idaho. Seats are in good condition, chrome is flaky, plenty of scratches (well used), both are complete, I even have an extra set of correct pedals for the yellow bike that came off of my blue one.