Hi @Karl Clarke I am trying to get the Trim Pointers to work and seeing odd behavior when I test both of them in MobiFlight. I followed @Ede Banatzke instructions in this post. www.737diysim.comMTU base stepper driver holder | The Simam I missing something or is there room for 5 drivers but 6 are needed?If I have 1 motor connected, the stepper moves as expected. When both motors are connected the movement is not smooth. My connections are as follows:This is what happens when both motors are connected to TB6600.Here it is with wiring still connected to TB6600 but only 1 stepper is connected. It is smooth as I would expect. This has me stumped.