Between my sector channel and the index lever there is a hole in the frame that I'm guessing is supposed to guide a cable that allows the blade to rotate left and right. There is something missing from this hole that will keep the cable from rubbing and eventually breaking. This is my first time seeing a wheel horse plow and I can't find a photo of this particular one to identify the missing part. I am assuming there should be a cable that controls these parts, not sure because it didn't come with this blade. Hoping someone can give me an idea as to how to get this blade to rotate left and right or maybe refer me to product center. Model 6411 Serial 552402 Thanks in advance