Choosing Parts

[Avery Todd]

List,

Anyone have experience choosing parts from the Renner Parts Kit
for an older Steinway 'M' (1925). Below is from Lloyd:

>We recommend restoring all quality pianos, particularly of this
>vintage, to their original design, using original dimension parts.
>In the case of Steinway, this cannot be determined by the serial
>number due to the way those pianos were designed at crafted at
>that time. This is why we designed the Sample Parts Kit. Simply
>test the different shanks & flanges and wippens in the piano to
>determine the best fit. For example, your piano will have angled
>capstans, so one might assume the angled heel wippen to be the
>best choice. The capstan angles varied considerably at that time,
>and it's possible the straight heel will actually work better.
>You have three different shanks & flanges for Steinway and two
>basic wippen designs in your Kit. The 17.0mm shank was never used
>in the original Steinway pianos so you can rule that one out.
>Test all the others in the piano to determine the best combination.

I have the kit but I need some advice on what, specifically, I
should be looking for, etc. to determine that "best fit". The piano
(or action) isn't in the shop yet but will be soon. Any advice
appreciated.

An old dog trying to learn new tricks.
Avery
University of Houston