Just an update, I've put about 650 miles on the bike so far. Really enjoying it!!
I did my first oil change a few days ago, pretty sure it had Yamalube in it. I changed it to Rotella T6 and the gearbox is at LEAST 2x as tight now. Before it would clunk a good amount, now it shifts beautifully. Very happy with how it rides and performs.
One thing I'm not happy about, is the mileage

. I haven't tracked it yet (Need to check the manual to learn how to set the trip), but I'll be lucky if I get 180 miles until the reserve starts flashing

. Its definitely under 40mpg, closer to 35 I'd imagine.
12k miles, two brothers exhaust, K&N air filter, otherwise stock mechanically. The exhaust pops a bit on decel so I'd imagine its running a bit lean? What do you think is the culprit? The exhaust? Plugs should still be fine to 16k or so right? Would a TB sync make a big difference? This is with cruising and generally light throttle.