OK, I'm a newbie, maybe someone already asked this question, do you use fuel additives such as STA-BAL? Every Time I have a problem with any of my motor driven machines, such as lawn mowers, rototillers, or....my motorcycle and call the repair shop they ALWAYS say it is bad gas. And ask if I use additives. Well, back then no, but now yes.
As far as the bike goes, the parts guys at the Honda dealer say that gas goes bad in less then 2 months. And suggested to add some STA-BAL with each fill up, which I do most of the time. That stuff is expensive, $10.50 per copy! But well worth it if it keeps my gas good and increases the Octane. OMG! Not that damn Octane thing again!
But, besides the VTX, I do put additives in my wood splitter, lawn mower and my grandsons RTV.