Is it leaking coolant or trans fluid? I'm guessing its leaking coolant from your 1st post.
You could disconnect the trans line and tighten down on the fitting. I just swapped radiators and the new radiator had the wrong trans line fittings. I ended up swapping them. It's a huge socket something like 26-27mm.
Also you need a special tool to disconnect the trans line quick disconnect.
Here is where I got mine.
http://www.otctools.com/products/detail.php?id=1751