Question regarding normal motor sounds/ vibration
I just last week purchased a 2014 Valkyrie. It had 780 miles (now 1100 after I got it). Unfortunately, I don't know any other Valkyrie owners to compare, so I am asking for your help.
When I hit 3000 rpms, there is a mild yet notable sensation of vibration in the handlebars. I can know I have hit 3000 rpms by the sensation alone. It almost feels like mild resistance in the engine on and off translating to the handlebars. The engine itself, or the power output is fine, and if I give the engine more throttle, the sensation minimalizes. But, at a lower throttle lever, the sensation is noticeable. It feels like a drag, and it might be accompanied by a slight whirring or rubbing sound. It is worst between 3000-3500. I am sorry for the vague description, but as it occurs when driving, not idle, it is difficult for me to isolate the issue (if it is even one). Also, below 2000 rpms the engine feels a bit 'gravel-ly'; I'm not sure if this is simply the lugging point, or what. As this is a Gold Wing engine, it strikes me as something slightly wrong.
I have the extended warranty for two more years, so the problem is not urgent. The problem is the nearest Honda Powersports is two hours away. Thus, I want to be sure I have a problem, and this isn't simply a characteristic of the engine. I have owned other motorcycles, so I am aware that, even at its worst, it is way smoother than most others.
As an aside, the dealer, who serviced the bike when I purchased it, had left the oil levels low. I didn't notice till I got home after a 3 1/2 hour ride. I checked the next day, and they were low. I have added more oil (about 1 1/2 quarts), and it slightly helped - or maybe it's placebo effect.
Any thoughts or advice for diagnosing would be appreciated.