This started a couple months ago. My 03 America would start on just the left cylinder but I'd ride it less than a mile and the right cylinder would kick in. The other day I rode 10 miles and the right cylinder never kicked in. The next day I started it up and both cylinders fired up and I rode it for 125 miles and it ran great. I stopped and got gas and when I started it up it started on just the left cylinder and I had 25 miles to ride to get home and the right cylinder never kicked in. Has anyone else had this problem? I am not a mechanic so I am not looking forward to taking it to a dealer. I don't think it is the carbs cause if it was why is it intermittent? Any help would be appreciated.