Hi to all, I use the Quick lok M92 (for 2 keyboards), the M91 is for one Keyboard, I use it for my 3000 (and PA60), now for my T2 and the PA60...it has high ajustment and if you need the attachment for the second keyboard, this one has high (in relation to the bottom keyboard),and angle ajustments too. This option is not cheap, but it certainly is more capable(weight),stronger and easy to fold/set up.
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mdorantes