The problem you're having doesn't sound right! There shouldn't be a "global" setting that would apply this effect to "every patch". This is something that would be "patch specific".
I know you have loads of data from the previous owner, but you really need to do a system reset!
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GEAR: Yamaha MOXF-6, Casio MZX-500, Roland Juno-Di, M-Audio Venom, Roland RS-70, Yamaha PSR S700, M-Audio Axiom Pro-61 (Midi Controller). SOFTWARE: Mixcraft-7, PowerTracks Pro Audio 2013, Beat Thang Virtual, Dimension Le.