Lost the use of 2nd gear while out on a long desert run... 1983 Jimmy, 4spd manual gears L-1-2-3, will drop out of 3rd (though it's marked as 2nd on the stick - OK, it's the gear up to your right). I can hold it there sometimes, but other times it kicks out. Otherwise running through the gears is smooth and when stopped there's nothing that would indicate a problem. Clutch works fine. OK, so the solution? I'm thinking of maybe the transmission mounts? They look fine, but maybe re-tightening?