Hey Chris, or anyone else who may be able to help....
I was changing the transmission fluid, and removed the three drain plugs to do this. When I stuck my finger in the aft hole ( as I did in all three, looking for sludge or whatever ), I found a 1/4&quot; hex bolt, about 3/4&quot; -1&quot; long and got it out. It appears to be undamaged, with only some stripped threads, so I don't think it got caught in anything. It looks strange, though, with a thicker hex than normal bolts have, and an area in the center of the hex top that looks to have been welded at manufacture? There is also a rectangular indentation at the end of the threaded shank.  Does anyone know where this may have come from in there, and should I be alarmed? I don't want to tear into it for nothing, but don't want to damage something, either. Tractor works fine as of now. I am hoping it was dropped in there accidentally at some time, but I have a bad feeling that it fell out of something important. 
Thanks for your time!
Patrick