did some analysis on problem with
lateral play on the Panasonic pan shaft, maybe 0.2mm, so it is squeeking, haven't dismantled it yet , because it is still usable
not sure if I need to replace full unit
https://www.espares.co.uk/product/es147030 (top left)
or whether seal on its own could be responsible, bottom right,
I tend to think the brass bearing sleeve must have worn, but that seems unlikely.
aliexpress has kits top right, but that would be 50% of the complete unit, and not a guaranteed fit, can buy the bearng sleeve, alone, too