i understand nothing... BUT you helped me anyway! i managed to do it like this:

as you can see, with SML set to Unbounded i allow B3D Camera on Z axis to Scroll infinitely as you move Locked Mouse X
as for B3D Camera on X axis...
I make it be set to SML Mouse Lock Y ONLY if it's between -85 and 85 (i look up and down in the game for those values)
it works Flawless~ and Thanks to YOU i came out with this simple idea!