I am new at plowing. We always had someone else to plow our garden when I was growing up because we didn't have a tractor. I bought a tractor last year and I am not sure what the plow parts are called. I have a Dearborn model #10-152. The part that turns the dirt over is worn out on the bottom that goes into the dirt and is broken. It stills plows good and turns the dirt over. It is like this on both. Is there any need to replace it or just wait until it breaks completely and then buy a new one or a used one? If I do need to gets these fixed then what are they called and how do you measure them? Thanks Tim