Uprights seem to have outsold grands by a large margin. Later, Walter Lane opted to use the Farrand-Cecilian action which, while it was doubtless excellent, is a very difficult restoration today. If this was not the tightest player action built in the US it must certainly run a close second. The only rubber tubing is from the finger buttons to the accessory pneumatics, and a short length of hose from each end of the pump to a manifold on each end of the stack. The point being that there's very little opportunity for leakage.
Every separable joint is gasketed.
It was a beautifully designed mechanism which works extremely well, but it is incredibly heavy. Each is sprung differently and they collapse in order, thus enabling extremely subtle accents. In Victor and Farrand pianos the player was usually lacquered black. I bought it for my own use this past weekend and it was moved in today. Ed mentioned that in his the die cast parts are still in good condi- tion.