I just completed easily the HARDEST tubeless tire installation on my wife's bike. Started around 1pm. Finished around 4:45pm.
Picked up a 27.5 wheelset for her bike on FB marketplace a few months ago, WTB STi29 rims, Formula hubs. Dude said he never had them tubeless. Well I guess that meant he wasn't successful because the front had sealant under the rim strip, no evidence of tape and gunked up every spoke hole. The rear had Gorilla tape residue. And both valves had sealant around the rubber base. Thoroughly cleaned both, re-installed the WTB rim tape as that keeps the tubeless tape from being punctured by a spoke nipple. Taped each wheel with Stan's tape.
Now the tires, Maxxis Rekon 27.5x2.6s. The amount of effort required to get the tires on the rims was just amazing. Did the front 1st, then realized it was on backwards. Almost called it a day, but did the rear. Tight as well, but learned enough doing the front that it wasn't too bad. Removing the front to switch the direction took even longer than both installs combined. Literally had 3 tire levers on it before finally getting it off. Direction correction completed, aired both up, but no sealant yet. Tomorrow. It's BEER:30
I hope she doesn't flat during a ride.