One more thing Dave, just exactly where is it leaking at? Where the sending unit screws into the tranny or where the electrical plug is? My unit was leaking internally where the electrical plug connected onto it. So it was obvious my sending unit was bad.
Also I drained out the ATF from the pan drain plug before I removed it, I wasn't sure if ATF was going to come gushing out or not so I didn't take any chances. (Nothing like ATF running down your arm)