Reply to new to the s4 need help with tempo fader

how do i set the s4's tempo fader to stay exactly where the bpm is at at all time. it use to be like that and i dont know what i did to it but now everytime i change over to a new song and try to mess with the tempo it goes to where the tempo should be at on the s4. i know its confusing and i cant really put it in words but lets say one song is 128bpm and i have the tempo faders in the middle -0. i have another song going but its at 132bpm and the tempo fader is at example at the bottom of the fader. i do my crossover and i try to move the tempo fader up it goes to at the max tempo speed where the fader is at on the S4. it never use to be like that. it use to just gradually move the tempo slowly regardless of where im at on the S4 faders. hopefully this makes sense. even im confusing myself but any help will be appreciated thanks alot.