If your tranny is slipping your probably not using the right oil. You need an oil that is wet clutch compatible. Maybe some of these people with tranny problems are using the wrong oil and blaming the resulting tranny problems on Exmark. I have not had any tranny problems at all. One question, has anyone found a website online where you can order the blades for the Exmark 30? My dealer seems to be jacking up the prices on blades.