Hi folks Ran into a new one for me. Fairly new Yamaha C6.. due for its first main service... overdue really but somebody has to pay for this stuff... Anways... started off with checking key height... 64 mm ok... made sure of the bedding... ok... set blow to 47... 1 mm deeper then spec but I find this usually leaves about the right amount of aftertouch.... ok... Did the letoff... 3 mm bass, tenor started at 2.5 and tapered to just under 2 at the top... ... Started noticing something wasnt really quite right....lots and lots of after touch... .. Checked key dip and it was SHALLOW for most of the bass, and just a bit deep from about middle C upward... So I double checked everything I'd done so far.... and decided to go ahead with 10 mm key dip and see where things took me. Anyways... I got done with the whole routine and found I still had too much letoff.... big bump. So I started to increase blow to 48 and found I couldnt get any deeper. The shank cushion stopped the hammers at 48 - 49 mm ! So... in the end.. I had 48+ mm blow, standard Yamaha spec letoff and drop, 10 mm dip, 64 mm key height and too much aftertouch with no real way of getting less. Ok.. I could have fudged a bit on let off... but a few tests didnt really get me where I wanted... I would have had to go with about 2 mm in the bass... 1 mm in the treble, and a 9.5 key dip to get the aftertouch down to where I usually like it... which is by no means too little. Anyone got an idea as to what could be wrong here ?? Cheer RicB
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