Young Chang action noise

[Tom Myler]

PDtek@aol.com wrote:

> List;
> I service a lot of Young Chang grands and a many of them seem to have
> excessive action noise. These are new pianos with tight screws, the
> frame is
> bedded, I've lubed the knuckles to eliminate that characteristic
> grunting
> noise on escapement, yet there remains a distracting amount of woody
> klacking
> noise on the return. Does anyone have any suggestions on how to reduce
> this
> noise?
>
> Thanks
>
> Dave Bunch

   Possibly:  knuckles are hard, loose (might not be obvious), or both.