Just put on a new UST tire (Continental 2.5 Diesel Pro) on a Mavic 823 UST rim on my Intense and had zero issues with anything. It so simple when you don't resort to ghetto setups
1. Take off old tire and tube
2. Install UST valve stem (I had to do this because the old tire wasn't tubeless)
3. Install new tire
4. Inflate with a floor pump (regular pumping, it held air with the first pump) to tire's max psi to help set the bead
5. Bounce it a couple of times because I enjoy doing this
6. Reinstall wheel on bike
No goop, no mess, no fuss.