I just replaced the front forks on my 2018 PCX using the excellent video by @MicBergsma. I find Mitch's videos very easy to follow and relaxing at the same time
So, thank you Mitch for making a daunting task relatively painless !
This is how the old forks looked when I got my bike back after 6 years in a very salty environment. I decided just to replace both forks rather than rebuild the existing ones as I found a pair of almost new ones for the price of the re-build parts.