Motorcycle – neck pain – ordeal on the tour

Dear community, maybe someone with the same problem can help me solve it for myself: Since I am 18 I drive a motorcycle – often very long distances. Depending on the model I drive, I have since been getting burning and stabbing pain between the neck and shoulder blades after about 2 hours. I had no problems on Yamaha FZ1 and BMW F800GS. However, there are problems on CB 550 Four, FZR 1000, FJ 1200, FJR 1300, GS1150 ADV and unfortunately also on my aktu ellen GS 1200 ADV. What I think can be excluded are: – false helmet – problem is independent – false wind protection FZ 1 has no, 800 GS has tested which – inadequate training (daily 40 minutes back, abs, arms) – handlebar increase up and down – uses nothing – different benches with different heights and within these still different adjustment heights. So it must be due to the ergonomics of the motorcycle. I don’t want this So now it has to be rebuilt until it fits. What might help is a handlebar that is closer to the upper body. Is there anything there? Does anyone have any other ideas? The picture shows the seat position still with handlebar lift. For your help already thank you very much.