Hello from the UK - I have just got my PX-5S and have tried to read all the info I can find but can't see an answer to this ... My Keyboard in running V1.12 as delivered and I have run the Knob calibration function. If I select SS-0 the EQ for the piano is controlled by the 4 knobs. If I put all the 4 knobs (EQ frequencies) to Max fully clockwise and turn off the PX-5S when I turn it back on the amount of EQ is much less than before. Does this mean you have to turn the knobs to centre? or Min? Before power Off. I can't see a requirement for this in the Manual/Online Tutorial Do the Sliders react like this as well? Any comments much appreciated. Roger