Hello, I inherited my harbor freight jointer from my grandfather in 2010, ever since it has had a chip on each blade. I am not sure what happened but I think he had hit a brad nail because it is about the same diameter, the section that is destroyed is a little over a 1/16th inch deep. Is there anyone here that knows where to get replacement knives. I have talked to the employees at HF but they could not get the replacements because that model has been replaced by a seven inch model. Any help would be greatly appreciated.