Thank you so much! Back in October my 26 TT lost its two front valve stems. Thanks to your video I was able to change the tubes yesterday without much trouble!
The use of powder is not so great, it will stay slippery and the tire could slip on the rim under high load conditions like braking on the back wheel. The tire lube used in a tire shop is a better alternative. It will eventually dry and the tire will stick to the rim better.
The rims people freak about are heavy equipment rims that have a locking collar and they are no joke. rim These are like changing a clincher (like a bicycle, a bit more adulting) only easier. A screw type rim spreader tool makes it easier.
Done both, no big deal. I was the kid with a screwdriver that fixed all my friends flat tires on their bikes with a tube repair kit. Life is as hard as you make it.