I don't use a 1224 machine very often. For the most part threading pipe over 2" is more cost effective to weld. But I recently needed to thread 3" pipe and used a Ridgid 1224 machine. This time, and the last time I used one, about two years ago, the jaws fell apart. I found a spring laying in the oil tray. After inspecting the jaws, one of them had fell out. This happened the last time I used one. Both machines were a year old. What gives?