Hi Stéphane There is nothing to tighten the side (cheek) blocks with. No screws.. no sign they were ever battened down at all. The front rail and side blocks are held in place by the key front rail. I cant say I have ever seen (read noticed) a floating front rail as a design feature... and thats why the suspicion. That said.. the thing is so stiff as is you dont notice any touch related issues at all. This is a grand actio by the way in case there is any confusion. Cheers RicB Hi Ric. Could it be that when you tighten the side blocks properly the front rail doesn't float anymore ? I had this surprise on my Knabe: when well tightened, the blocks who are mounted on the "mobile" part of the keybed bring the keybed in contact with the action front rail. So in this case, the action front rail doesn't float. Can anyone confirm the existence of this strange arrangement ? I'm not sure if that mobile keybed is a clever original feature or a curious problem that happened during the piano's life. What would be the gain to have good contact between the action and the keybed if that part of the keybed is not that firmly attached to the rest of the case ? And when the action is not in the piano, that part of the keybed seems fragile, in the way that it can move 2 or 3 millimeters easily. Sounds curious. Best regards. Stéphane Collin.
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