My 2018 MX5200 with 435 hours on it has a PTO problem. Yesterday I was using the flail mower as usual when I hit a small mound of dirt. I have hit much worse many times without issue. The flail is belt driven (2 v belts) and no slip clutch or shear bolt. The PTO stopped working and I couldn’t engage it while the tractor was running. Once I turned the tractor off and let it sit awhile the PTO would work for 5 or 10 minutes before cutting out again. I have been through this 3 or 4 times. I checked the seat switch which seems to be functioning properly. I checked the PTO by hand and it turns fine and has the usual stops on rotation. I did note that the PTO is easier to turn by hand than before. Any ideas what could be wrong?