The issue is the cost of the engine vs. value of the mower. If I could find a good 500-600 mower, it would be worth repairing. I was hoping someone somewhere has done a pro upgrade and could tell me what engine would fit with the minimum number of mods. Otherwise, I will sell it for the body and move on. I also have a Z242 which has no issues. I don't know if one of those engines will fit in it. I serviced it way more than they called for but am really let down.