Edward,
The WNG parts can be used on old action stack frames, or on completely new frames custom made by WNG.
I've installed complete WNG actions (new frame, wips, shanks) in an Aeolian era Mason & Hamlin, and a Kranich & Bach. Both went together well, and both results were very good. Maybe excellent.
The big advantage of the complete WNG action is getting a new stack frame with new rails, custom drilled to fit nearly any piano. If the old action is just wrong, or of an archaic design, starting fresh is easy, and the results are predictable. WNG is really doing our industry a great service by providing such a well-done custom fitting system.
For Steinways, if the old action frame dowels are stripped or the rails are wrong (split, rotated, too far apart, etc), just buy a new frame from Steinway. Use "new" NY design parts (either genuine Steinway, wood clones, or WNG clones) on new rails and you get great results. I don't think there would be much of an advantage to using a new WNG action frame in a Steinway, when you can get OEM parts so easily.
If the Baldwin has action frame problems, I'd go with WNG's frame in a minute. The package deal is well priced.
-------------------------------------------
Greg Graham, RPT
Brodheadsville, PA
-------------------------------------------
Original Message: ... What are your thoughts about a retrofit with a new WN&G action....Edward Mastin