Help my thermoquad lost its balls

Not for nothing - but I’m no thermoquads expert but I do love them. I started out in the early 80’s working on them and learning to tune them with books like this one. Any book newer than will have the emissions bs. Even some of the older Motor or Peterson books had Info on them back then. Good pictures and breakdowns that even people who knew them learned something. You can find these books on eBay or old book resellers, yard sales and flee markets. Good luck on your quest to figure out what to do with the extra ball.
Lol!