I didn't actually try to jumpstart it with any other power source, I just hooked one end of the jumper cables to the battery and the other end to another point on the engine (basically creating a new ground cable temporarily). Battery turned over just fine then, so that doesn't seem to be a battery issue, but a ground issue. Also, it did this with an old battery and a new battery I bought trying to solve the problem. I've since had it tested twice out of the car at Auto Zone and Advance Auto just to make sure, so I am feeling good about the battery. I'll try to get the stud out and put a new one in. Anyone with thoughts on an alternative ground location? Thanks everyone, and thanks TurboLou for the info!!