I struggle to get my printer working, and currently have given up on the servo. After a firmware update to 0.15.2 the servo lowers the rollers until they hit the bottom plate. Servo starts the loud noise as it tries to force the rollers even further. Maybe I did something wrong during assembly? The assembly instructions tells you to connect the servo to AOUT1 (page 154, instruction 31), but the trouble shooting guide says it is connected to AOUT2 (http://wiki.cartesianco.com/Category:Troubleshooting#Servo_is_Making_Loud_Noise_.2F_Getting_Hot) The trouble-shooting guide further tells you to calibrate the servo. Not a bad idea? There is even a guide: (http://wiki.cartesianco.com/Argentum_Software_Servo_Calibration) Sadly, this option has been removed from the software?? What to do? Will the printer do prints without the rollers?