Is there an expert in ArtEcho that can help me do final regulation on
a fully-restored instrument?

Also, is there anyone that can sell me an ArtEcho test roll? I've never
had one and I need it to complete this Apollo reproducing grand.

Doug Bullock - Piano World Enterprises
Alton, Illinois
https://www.thepianoworld.com/ 

 [ A series of articles about "Electric Reproducing Pianos (The Artecho)",
 [ published in 1928 in "The Tuners' Journal", are reproduced at
 [ https://www.player-care.com/player-piano-service-manuals.html 
 [ Search for Artecho and Apollo.
 [
 [ MMDigest articles about the Apollo/ArtEcho system are indexed at
 [ https://www.mmdigest.com/archives/KWIC/A/apollo_artecho.html 
 [ https://www.mmdigest.com/archives/KWIC/A/apollo.html (Apollo)
 [ http://www.mmdigest.com/archives/KWIC/A/artecho.html (ArtEcho)
 [ http://www.mmdigest.com/archives/KWIC/A/art_echo.html (Art-Echo)
 [ http://www.mmdigest.com/archives/KWIC/E/echo.html (Art Echo)
 [ -- Robbie