Hello all Recently I told you of the balance rail bushings in a 20 year old Challen vertical. These bushings were made of double-walled green plastic and were pushed into an over-sized slot in the top of the key. In that case the balance pin itself was a thinner diameter than normal. Today I came across another variation in balance rail pins. This was in a Knight K-10 about 30 years old. In this case the pin was again slightly smaller in diameter but had a plastic sleeve shrunk onto it. The key bushings were standard red cloth. Regards Michael G.(UK)
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