Avery: I worked on one of these a few years ago. On top of the rocker capstan is a connection similar to a Baldwin Acrosonic from the 1940's. In both cases the connection must be pulled off from the center pin. Usually a small screw driver can be used to do it. The bushing cloth may need to be replaced. You might try using Protek first to see if that would free the sluggishness. If not all 88 connections must be pulled off the rocker capstan and then reconnected. It is a lot of work but it is the only way to disconnect the stack from the keys and key frame. I did not need to work on the dampers on the one I worked on so I cannot offer anything about them. I hope this helps you. Call me if you need to at my office number in the directory. My cell number is not working at present. Martin Wisenbaker, RPT Houston, Texas
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