Hey. I just finished assembling the printer that I got. The thread rods are somewhat bent but not a huge issue....The problem that I am having is that the heating pad is not working. I followed all the video tutorials and connected all the wires/cords on the control board by looking over the pictures in the pdf file. When I turned it on, I messed around with the X, Y, & Z axis to see if they work correctly and they do. I got the extruder to heat up but the heating pad won't do the same. I honestly have no idea what to do