The focuser was getting bad over the years, I've re-greased once it after 8 years of ownership. Now, it's the 16th year! Despite the original focuser was retired itself for one or two years when a NGF-CM was used instead for motorizing focusing, it still serves me long enough.
Last time I just bought a Boron grease from a model shop and the grease was not sticky enough. Focusing was smooth but you could easily go beyond the point since it's not sticky enough. Recently, a local buddy gave me some sticky high quality lithium grease so I take the plunge to do it again.
This time, I was doing a complete regreasing. Last time when I was regreasing my LXD55, I gained enough experience so I could do it more completely. Last time, new grease was added but the old one was not removed. Frankly, there's an emotional reason behind that since the Ranger gave a Tele Vue smell which is probably from the grease so I dare not to clean them up completely. But now the smell was mostly gone, so I did actually remove all the old grease. And during the removal process, I could notice some residue Tele Vue smell and it's now the last time!
The old Tele Vue grease mixed with Boron grease after around 8 years.
Some of the grease was dried up and this is probably why the focusing action was no longer smooth.
And after re-greasing:
It works better than the first re-grease, nearly as great as the moment when it arrives.