I have an Ender 3 V2 which was modified to have a dual z-axis setup with a servo for each axis powered in parallel off of the one z-output.   I haven’t really had much problems with either of the servos skipping, but since I’m powering two motors I wouldn’t mind upping the motor current either.  I’ve tried sending m913, m906, and m907 commands (motor currents) and everything comes back as not recognized so it looks like this is all disabled in the standard firmware.   If I want to up the motor current for the z what’s the best way to go about it?  Thanks.