I have two Hustler Super Z's which I am constantly replacing the anti-scalper wheels. I have a mowing contract on land with a lot of rough terrain and I do a lot of curb jumping. I also have hired help who do not operate the mowers as I do though they claim they are careful. Everytime I do maintainence on the mowers (weekly) I will have three to five broken or missing anti-scal wheels. They claim they are not hitting anything. Does anyone else have these same problems with Hustlers or is it just a help problem. I have a John Deere and have had no problems. Thank You.