Vertical zoom of waveform in decks

Is it possible to define a vertical zoom in decks for the waveforms?
I process my tracks in MP3Gain to reach a "target (normal) volume" at 89 dB. But the waveform is too little (peaks for instance)
I process my tracks in MP3Gain to reach a "target (normal) volume" at 89 dB. But the waveform is too little (peaks for instance)