Join Date: Nov 2017
Location: Leduc Alberta Canada
I think you have identified many of the possible reasons, which it could be any of.
One you did not mention that I have found many new riders tend to do is,
gripping the bars too tight.
Try relaxing your grip, adjusting the bars forward or back, and see how that works.
Each body is a different shape, but the bikes are all the same from the factory.
I installed 30mm bar risers that were $40 and made a big difference for comfort.
As a new rider, your dealer should have helped you with the set up when you
bought it, but many don't and just take the money and hand you the key.
2018 Black 310GS
2011 Royal Enfield Classic with Cozy Bullet sidecar
1981 Honda 400 Homemade Bobber
1978 Honda Naked Goldwing
16 past varieties too numerous to mention