"Anyway, the owner says that there are "plastic pegs" in the back of the key, underneath. These go into some type of aluminum channel." These pegs are spring loaded with a plate spring. After ten years the plastic gives up - polarizes - unable to take the spring tension. This was the main problem with the Rippen or Lindener pianos. They had a totally plastic keyboard and those pegs replaced the conventional balance rail pins. You might be able to salvage pegs from scrapped pianos, but plastic being plastic they will not last very long. If you do find spares and try and insert them you will probably end up breaking a whole lot more than you started with because you cannot remove the clips from the neighbouring keys without breaking them. These pianos were an engineers piano, very ingenious and innovative design. I believe they were of Swedish design, parts made in Holland and assembled at Shannon Airport in Ireland in the 70's. Best to stay clear of this one! Regards Alan Forsyth FWIW, BTW, IMHO Edinburgh
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