I've noticed when riding my TU250x, when going longer than 15 minutes, my neck gets a little sore/stiff. It's not terrible, but I'd like to eliminate it if possible. I also noticed that I'm slumped over a bit with my head slightly downward. If I sit more upright, my head starts to get some wind as I'm assuming it's above the windshield airflow pattern. Anyone have any tips for better posture to prevent the soreness/stiffness? Thanks for any help.