hello james. very slight push or pull of the pitch slider may or may not change the increment displayed especially at 4% range. subsequently, the actual pitch may or may not be altered if the slider is slightly pushed or pulled despite without change in the display. to me personally, this matter overall is negligible. what's important is the pro or novice dj is able to beatmatch sequencer or drum machine-driven beats of two songs irregardless of pitch slider and range settings, and increments displayed. yes, there is a big difference between having the tempo lock on or off when moving the pitch slider forth or back.
have fun!
arman