I have a Kubota m4500dt. I was driving it into the pasture today when some of my animals ran out In front of me. I hit the clutch to stop the tractor. It stopped like always. When I let of the clutch and pressed the gas it bogged down and died. I tried over and over to get moving, but the tractor will not move and acts as if it was under a mega load and dies if I keep pressing the gas. High low shifts fine. I was able to try each gear, but failed to move anywhere. Then it finally stuck in 3rd gear and I can't move the shifter out of gear. It is truly stuck in 3rd and again when trying to go the tractor just bogs down and dies. If I keep the clutch depressed the motor runs fine as it should. It's only when letting the clutch out that this happens. Please help!