I have a 1952 8N with a Dearborn loader and an 8ft Sherman backhoe. It has a two position shifter lever between the engine and the transmission. The three point arms are disabled because of the backhoe and I am told this is the way it left the factory. Does anyone know what is required to restore the 3 point operation once the backhoe is removed. I have been told also it is more valuable when selling with the three point mechanism functional.