Purchased a 'new to me' 1981 CB650c for $275 a couple weeks ago. Did full tune, valves, cam chain, etc.
Also did head bearings, which was a new project for me. Hadn't done that before. PO mentioned that the steering was loose. YUP! After tearing into it, I found that one of the ball bearings was missing on the top row. Re-greased,k re-assembled and all is good.
Got about 200 miles on it so far. Runs nice.