Extruder at -2.25, is this normal?

It seems like every time I print I have to adjust the extruder to be lower to get good adhesion to my plate.-2.25 just seems like it’s getting out of hand.

Is it possible to manually raise the build plate using all 4 corners, or will that leave a dip in the center of my build plate?

Thanks.

Do you mean the z offset is set at -2.25?
There is an updated tutorial about bed leveling on the SV04. Please check if it’s helpful to you?