Wheel size expert
The first video is done last, maybe the liners swell up with different sealants and make the job a little harder. Keep on trying, it's bound to be easier with practice. I'd struggle to do a 29er wheel that way because my arms are a lot shorter than his.HE starts at the valve, not me.
Never tried on my own Hope and Stans. Other people’s i9, Mavic and bontrager.