Why are you all pouring through the shifter??? Isnt that taking more time undoing all that shifter crap and boot?? Your suppose to have the fill hole open anyways so you can tell when its full. You fill the tranny until it starts to leak out of the fill hole. If you are jacking up the vehicle or tranny in anyway, its going to throw off the level at the fill hole, and you could potentially be adding too much fluid. Unless of course, you know the exact amount to add, and you already know how much is in there. Is this a first time fill, fill up, or did you drain the tranny, and now you need to fill it up? If it wasnt leaking before, and now it is, you probably have too much in there. Your best to just stick with the right way of filling it, since it is faster anyways. Undo the lower nut to drain it, and then close it up when done. Then undo the top fill nut, and use a pump until the fluid starts to leak out, voila, your done.