Stephan: I doubt that the make/model means much with your problem. Run a leak-light through it, then look closely at all the inter-connected mechanisms to ensure nothing is opening (even slightly) when it shouldn't. Also, look closely at those troublesome notes and notes just above them. Low-note problems can be caused by high-note leaks. It could be anything really, but NOT because it is a Yanagisawa. DAVE
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