They can wander a bit although yours sounds like a bit too much, my old non eps used to pull sideways out of the blue sometimes, especially if you were hard on the gas. My new unit with eps is totally different, like chalk and cheese, really doesn't pull at all. Is yours eps? Being a '16 I guess it is.
Chookbanger Mark II,
Street legal Blue Viking, 2017 model, bought 3/4/2017.
Street legal Blue Viking, 2014 model bought 3/4/2014, sold 3/4/2017 with 2850 km and 189 Hrs.
Yamaha Saggy Bottom Club member.
Other Yamaha Bikes Currently Owned
2017 Grizzly 350 4x2 Auto Quad
Honda 2012 CB250
Honda 1999 CT200
Honda 1985 CT200 Trike
Polaris 2016 Outlaw 50 Quad