I currently have 4 Nema 34 Stepper motors 85BYGH100B-04 with a Gecko G540 and the Power Supply is a KL-600-48 input 110 14.5A output +48v 12.5 A. I lose steps on large Gcode files (3 +hours) could it be my power supply? Is my power supply large enough for the Nema 34's? Not maybe a month ago it was losing steps so I decided to buy a new Gecko and replace the power supply with an exact replacement with the one I bought the machine with. It has ran great with large files until yesterday then it started missing steps again. I cant afford a new Gecko and power board every other month. At the end of my file it is laser engraving some text and the text line drops gradually then holds good for a while then drops again. Its my Gantry motor the Slave A that keeps skipping. I have switched motor cables and the problem moves to the other motor so i don't think its my motor. I'm lost and any help would be greatly appreciated.