Gain return to 12 everytime I load a song... MC7000

When loading a new song to a player, the gain volume returns to the middle. Using auto gain don’t help, cause the volume change is too obvious. I have to touch the knob on my mc7000 everytime I load a song in the software to remember that im not at 12 o’clock but more like 9-10!

Same problem using the unmarked Idj pro. Also there is no knobs on the controller for gain and the knobs in the program are extremely hard to adjust