[Seeker]

There are some topics that I have stored in my brain that I carry along with me confident in the veracity of my thoughts. Then I verbalise them to someone and my firmly entrenched foundations are shaken.

Valve clearances - do they tighten or loosen with mileage?

I always thought they tightened as the valve seat wears. My MT07 friend contradicted this and claimed the dealer said they would get noisy if they needed reshimming.

Googling it gives mostly (but not completely) that they tighten.