Thanks Isaac and others for your helpful suggestions and measurements. My problem, as you may have guessed, is with regulation. With sharps at 12.5mm high I cannot get enough hammer lift to reach string height unless the sharps dip beneath the white keys. The white key bottoms at rest are 2mm below the top of the keyslip so I guess I could lower them a little to 3mm? That might give me enough dip on the sharps. Yes you were right- the original ivories have been replaced at some time with plastic which gives a key thickness now of 26mms. Is this too much? The plastic is about 1.5mm thick- I believe the ivory would have been thinner. With key dip set at 10mm I still have about 13mms of the key above the keyslip when the key is depressed. Am I right in thinking this is not an important figure and that I could afford to reduce the key height to correct the other problems? Although I do not have much room for movement with minimal punchings on the balance rail. James Perkins 42 Marlee Road Parklands WA 6210 Australia 08 9581 6354 Mobile 0401674447
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