I've noticed the same thing as FuzzyRider. Mine did it a couple times on my last trip to Colorado. Both times it was raining and cold. The second time I had no choice but to pull over and restart it. Acted like it was out of gas. Didn't matter how much throttle I gave it, just wouldn't go. This was on Hwy 64 in New Mexico where it isn't really all that high. I had climbed from Tierra Amarilla to the top of the little pass between there and Tres Piedras.
As far as Yamaha working on a fix, I don't know. When I get a recall letter I'll know for sure. The dealer is a joke.
It's a pain in the ass and Yamaha should fix it, but I can live with mine until someone finds a fix.
If it gets worse, it might fall off a cliff in Colorado.
"I don't know what happened officer. Just pulled over to take a piss and the damn thing rolled off the cliff".