https://stargazerslounge.com/topic/2...each-elements/
This grease is similar and readily available:
https://www.supercheapauto.com.au/p/...sz=36&start=24
This tool works great to undo the end of the RA shaft:
https://www.bunnings.com.au/craftrig...anner_p6270612
Whilst your there, you should also replace the belts. I got mine from RS-Online. I went with the 180mm on my RA as mentioned in the first link.
https://au.rs-online.com/web/c/mecha...612,4294877625
Make sure you buy a spare or two.
Here is the guide I used:
http://reset.cbm8bit.com/uploads/fil...de%20final.pdf
Hope this helps.
Robert