When I bought the 1350 to use for the doubler, it came with the linkage for the AL4D which is supposed to work with the M50D setup. I’m here to tell you it doesn’t, the upper portion of the linkage hits the back of the transmission in high range. So out came the welder and the chop saw! Stock Arm: Little cutting action: Slap some ½” rod and a threaded section onto the old linkage: Get your knob of choice…