I have a couple of old McCulloch FR56 trimmers, that I bought over 15 years ago. They run great, and I use one for trimming the tall weeds at the edge of the property, and the other I keep a saw blade on for cutting saplings, etc. However, I cannot find a source for parts for these old rascals. I am especially interested in getting new air filters for them...I have washed the foam filters several times, and they are getting "past their prime". Does anyone know of a parts source for these. I am tempted to just buy some foam, and cut some pieces to fit...if I can't find the real thing.