Seating strings

[Phillip Ford]

>Theory.
>
>I agree that it is highly improbable that the string climbs up the pin.
>
>
>However the pin can rise out of the bridge, due to hydraulics. As moisture 
>is absorbed by the bridge, force is applied to the bottom of the pin, 
>moving it upward.

This would seem to argue against bottoming the pin in the hole.  Some 
rebuilders (maybe some builders too, I don't know) drill the holes deep and 
don't drive the pins to the bottom of the hole.  Do you think this would 
prevent this?

>  ...
>If the pin has moved upwards, then this can explain why a light tap will 
>seat the pin and string, and be a partial cure for several years.  The 
>hydraulics with begin to do it's evil work again.
>   New pianos going to a very dry climate will exhibit shrinkage of the 
> bridge, and can show a lot of falseness. Seating the strings by tapping 
> the bridge pins cleans up a lot of the garbage, and lasts for a number of 
> years.
>...
>Regards Roger.

Would tapping the strings down without tapping the pins down not accomplish 
the same thing?

Phil Ford