"Old wrote:

Original segment (8B6073) material thickness is 0.188".

Thank you!!!

"edb" wrote:

Hi team,
suggest you try the easy things first by removing the lock bolt and nut, if not already done, and check the thread condition--often the nut and bolt threads are dry and/or have rust where the nut last tightened to and so cannot easily be tightened more, sometimes the bolt threads can be stretched/distorted at the nut last tightened position too.

Maybe a new lubricated lock bolt and nut or a good clean and lube is all that is needed.
As said above the hub threads are likely worn and so needs extra force from the clamp system to secure it.

From memory, you need around 50 lbs force pull on the lever.
We usually used a spring scale/balance, hooked at the bottom edge of the clutch lever handle to test engagement pull.
Cheers,
Eddie B.

We will try these suggestions, thank you!!