3 on the tree part help

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hey everyone, new guy here. So I picked up a 69 a few weeks back that the man swore was his daily driver, etc etc. needless to say I took it out the other day and ended up towing it home.

watched a youtube video on adjusting the 3 on the tree:
https://www.youtube.com/watch?v=2TCHzIvAvRQ

and ended up with this:






I cant get the darn thing to line back up to get the bolts threaded. The larger ring and smaller ring also fell out and it seems something should have been retaining them? or the clamp that I slid down holds them in when tightended?
Also it appears I am clearly missing the black boot over and wondering if someone more experienced could lay eyes and let me know if there is more that I am missing and if that might explain why it is so dang hard to switch gears and it is always getting stuck.

Thank you in advance