Originally Posted by Voodoo76

It's not a bike handling or skill issue.

I was not a pro, but started racing in the early 80's & was a solid Cat 2 into my 40's. Primarily Crits & some track, some results in the early mountain bike scene. I considered myself a very good bike handler and had a reputation as such among my peers. My hobby outside of cycling was sport bikes ( I'm currently bringing an older 900SS back to life). I was a very competent & fast rider. I was never stiff or nervous in any situation until I started to struggle with wobbles, it was a side effect of them not a cause.

I can say that even if you manage to fix the root cause, once it's in your head it is a tough thing to shake.