Ahh yes!! Been there a few times.Laying under a car with a tranny on your chest is fun! I'd bench press iut up with my arms and then get the tailshaft up with my legs/feet. Try not to drop it on your head!
Im always on my own putting stuff under cars. It's an unpleasant job most folks dont like,so a floor jack is your best friend.At least it wont flake out on you.