Haven't had it out much, but after an hour of hwy driving, one cylinder, i think stopped working. trailered it home? any ideas

If the fuel in the tank sat for more than six months, it separated and fouled a spark plug. Common problem for motorcycles that get stored in the wintertime. Replace ALL FUEL, use a CLEANING ADDITIVE with the first tank of new fuel, and REPLACE THE SPARK PLUGS.

If you must store the motorcycle in cold months, EMPTY THE GAS TANK before storage, and put new fuel in when putting the bike back into use.