So I take it that you don't do your own repairs. A new model Ferris Pro 60 you are looking at around 10,000 dollars. So I guess for 2500 dollars you will still have a commercial mower. What you can do to save some money is take the drive unit out yourself and bring it to a hydraulic shop and have new seals installed. The newer Ferris Pro 60's have a different drive system in them now then the older H2222K models. I sure hope you didn't do any damage by putting the stop leak into it. If you decide to just have new seals installed you should install all new oil and filter into the drive system. The best of luck