Dirk, no worries, when my K80 needs service..its going into you. I do know that you have to be very fault weary rebuilding a turbine. I was a Jet Engine Mechanic in the USAF for 6 years, I get it. However, there are guys that will do what ever to save a dime, and changing their own bearings can be done. Recommended..dubious, but it can be done. I know most of the guys I fly with go over the 25 hrs and have no issues at all. They also send their Jet Cats to Germany to get repaired because Bob Wilcox is horrible. He is the number one reason why I now own your product!! Which is good news for you and your business. I will probably send mine in at 25 hrs just to keep the warranty in tact. I also run the recommended oil, and Jet A only too.