Junkman and Henro, thanks for the tips. It's out! On further inspection, I found that my left front wheel was about a centimeter from going over the same dropoff (obscured by brush) that the left rear wheel went down. If it would have dropped, my problems would be medical rather than mechanical. /forums/images/graemlins/blush.gif
When I measured the distance uphill to level ground, it was about 120 yards, which would make recovering it from up there difficult. However, the ravine levels out down below, after a very steep drop (small cliff), and my neighbor was able to get his tractor down there from another angle. That was only 40 yards, but downhill. We attached straps from his 'bota to my FEL to keep the front from slipping over (the one centimeter) and I slowly crawled the left rear wheel up the little ledge. Once I was up on the "regular" slope, power returned to nearly normal in the wheels and I could move the FEL. I drove it up the hill to level ground, checked the trans. fluid and it was a little over a gallon low. Clamping the vent tube on the inlet cap saved me - if any more fluid had drained, I wouldn't have been able to move and wouldn't have been able to add fluid. When I went to buy new fluid, the service guy suggested I overfill slightly to compensate for the hilly terrain. He also recommended Depends undergarments rather than diapers. /forums/images/graemlins/grin.gif
Henro, thanks for the link to that great thread! Man, I'm glad my tractor wasn't stuck for 3 months. All the posts demonstrated the quality of this board - a bastion of civilization on the internet.
Thanks again, guys.