Best way to rule it out and measure the run out on your crank. Hard to guess at these things, better to rule things out, but then measuring the crank run out isn't a simple project for most but it could reveal many things. Jimmy, I seriously doubt your new Switchback has this issue.
No, it's not my Switchback. The Wideglide motor appears to tighten up (in all gears) at RPM's much lower than in the past. The vibes are "telling" me to shift instead of the normal RPM range. I've been riding her and I'm not overly concerned but I do plan on tearing her down after the summer; ballancing the crank, hone cylinders, the works. Probably close to $2.5 grand but she's definitely worth it. we've been thru hell and back together.
Peace