It may be an advantage that the America doesn't come with a tach. That means if you want one, rather than dicking with the worthless Triumph tach, you buy one that actually works. I'd recommend getting just about anything except the Triumph tach, and mounting it on the bars where you can actually see it. The Triumph tach is so far down, you really have to take your concentration off the road to read it. That's pretty hazardous for a tach that might give you a ballpark number maybe. If you try to measure below 2k to adjust idle, it ain't happening. On the low side, mine sits on 1k until it shuts down, and only then will it drop to the bottom.
Other than that, I love it.