And what are you using for backcheck underfelt, please Ron ???

[Ron Nossaman]

>      I got several thicknesses of semi firm felt to
> try from Jurgen, but if you already know which one is
> best for a 1923 Steinway  M  (  with the older, bulgy
> sort of backchecks  )  which will have Tokiwa wippens
> and shanks, and Ronsen hammers, such advice will be
> most sincerely appreciated.