i was opening a field of corn one night, and coming to the end i started to raise the head, but it wasn't coming up, i didn't relize at the time that the combine was sinking as fast as the head was coming up...opps!! not being able to pul it out that night we waited til morning...(mista- ke) it sunk about 6 more feet over night, 2 mack wreckers, a tractor_loader, and my big tractor, bridge planks, and lots of chains, we finally got it out. the unloading auger was to low to unload into a pickup box, when getting out of the cab, i had to step up to the ground. we unloaded into the loader, dumping grain into wagons, we dug down with the loader and planked under the tires, and still sprung the combine, we tried to be soooo careful but it didn't help. we ran the chains under the rear axle up to the front axle, putting 4x4's between the frame and 4x4's. all we could do was use that combine for a parts machine after i bought another just like it!