Diff`rent Strokes II

[agustin]

My questino is simple: My Mark 1 Stage 73 drastically changes of timbre from the b key after the following octave ( higher than the central C ), it seems as the hammers hit the tines moe agressively (in fact, lookin the hammeres from the front of the opened rhodes the are all a little higher ). Is this ok? What can i do? Shall i incerase the distance between tines and hamers? Tha sound changes awfelly from there and hitting those keys doesn´t result in reaching that distortioned Rhodesy sound? .
I hope i make myself understood and sorry my English.

Would appreciatte some advice. Thanks :