I have an older Husqvarna model W4814A walk behind that does a fantastic job of cutting; however, second gear does not work properly. First gear runs fine, but second gear jerks like it is missing a gear tooth or something. Reverse doesn't work either. I would like to correct these problems. First gear is a little too slow but third gear a little too fast. In anticipation of a transmission tear down, I've looked for parts but haven't seem to locate them. Perhaps someone might have an entire transmission or repair thoughts.