Well, I just ordered all the stuff to do it. While I'm at it, has anyone else ever added a drain plug to their 5600? I know I spoke to a gentleman on here about a year ago who did it to his, but I can't remember his name. He has a red 12v, hauls travel trailers for a big name camper company. Just wondered if anyone else besides him has done this. I'm planning on measuring 9 5/8" back from where the clutch housing meets the transmission and drilling and tapping a hole in the center of the transmission, then using a magnetic drain plug from a eaton rear out of a Mack truck.