Ouch, somone really did a number on the parts there, when I get it brought back, I may (whether they are in good condition or not) be able to supply some parts from a 14" scotty I just bought, it should be here in the next fortnight or so. Worst case, there was a 20" one being sold locally pretty cheap I was looking at for myself but it would be just too big for my yard, I can chase that up and see if its still available.
