Bought a Gold Wing from my brother many years ago, it had sat in his garage with gas in the tank and no Stabil, but Stabil only lasts for 2 years, so they say. I rode the gold wing back to Joliet, Illinois from Thornton, Colorado, nightmare ride, wouldn't idle or anything, but did run, fairly well at expressway speeds, if you could handle it jumping all over the tar strips, anyway, to cut the story down, when I got home, I found the carbs full of wax, gelled gasoline, cleaned them, still bad, the tank was full of rust, rust will pass by filters(?), used an acid formula, from Yamaha, to clean the tank, a sealant and the bike ran great, the dancing on the tires was bad sidewalls from old tires, still lot of tread, just age. If you have stuff going into your carb and the bike had been sitting check out the condition of the inside of the tank. It will be a continual nightmare if it is rust and gelled gas.