I was recently mowing then moving from one property to another and without warning heard a pop and the forward pedal went completely to the floor. Tractor stopped immediately. Crawled underneath to find one end of the hst linkage was broken off. I got a neighbor to pull me back to my building. Getting the linkage rod off was a pain. May be easier without a cab. Ordered part from dealer (actually ordered a spare) and had them drop shipped directly to me. Parts came very quickly. Linkage went on much easier than it came off. The end material appears to be a cast material with the adjustment rod being steel. As you can see in the pic the end broke right at the end of the threads. 2014 XR4046 with 1400+ hrs.