I am looking at buy a used Honda Harmony fg100 tiller on ebay. The seller says that there is one bad gear on the shaft that drives the tines. My question is can it be repaired easily and inexpesively? Is it a re occuring problem. Any information would be great. Thanks Christine My husband would be the one repairing it and he can fix just about anything I just don't want to buy the tiller for 100 then put 200 into it.