Agitator noisy and not agitating wash

First I replaced the broken plastic control knob with the better die cast knob.
Pried the cap from the top of agitator assembly ..after first removing the softener dispenser.
Used socket with extender to remove visible retaining bolt. Pulled out plastic column and old dog bone ratchet assembly. Removed and replaced bottom spacer ( this had busted tabs and caused noise during agitation), greased all appropriate points with silicon grease..lithium would have been better...ordered wrong agitator so put old undamaged one back with new dogs which fit. Snugged down bolt..runs like new machine again.