Hello, ezrider93, I had this design on my MF240 model. It is a mongrel patent. the clay gets into the threads and jams the turn buckle, and to release the chain you need to reach under to the front of the chain to get the lynch pin. After a while you have worn a groove on the pin, this locks the chain onto the pin. Pry bar time. My MF135 had the solid bar set up. This was a far better system