I thought you had already made a video about greasing the hubs, but do I see something new? It looks like you took an old ABS sensor and bored out the middle of it, to make an adapter for your grease gun? Did you find that the grease wouldn't go in without the adapter?
I would have expected that the grease would have still gone in easily without it, and yet I have never tried because when my '98 hubs wore out, I just replaced them, and would probably do the same next time (except there probably won't be a next time, I expect the replacement hubs to last longer than the rest of the vehicle) because I could not get my ABS sensors out without the sensors breaking, due to being seized in by rust.