Woke up AR22 rotor from 2 1/2 year slumber 

I rebuilt this rotor a few years ago, hasn't been used since I took the tower down at my old place in early fall of 2021. If I recall, I got this rotor w q broken rung gear and bearings where pitted and the ball retainer needed replaced so I am surprised it works still. I can't remember I think the date stamp is 1978 I believe not sure may be '73, not sure