I had and reluctantly sold two KT-88s. They were just too heavy to lug around. Bought an ESQ1 for $25. Works as a midi controller but the synth volume is very low, regardless of where the slider is located. Bought a volume pedal and plugged it in, but result is the same. I can hear every voice I select, but cannot raise the volume. Love the original sounds and want to use the axe to make music. Any suggestions? BTW: Checked all plugs and connections.