You guys are the best. Will do. Thanks for walking me through step by step. I didn't get a chance to work on it today. I'll start with the above and see where that gets me.
As far as how I got here—I think Mitch is on to something. I haven't driven it more than 200 miles in the past few months due to travel and weather. At first, I noticed it took longer to turn over than usual, but assumed it was due to lack of driving. So I let it warm up and drove down the block. It died. After a while it started back up (as if it was flooded). I replaced the battery to start (~3.5yo). Started up a bit faster, but same story. Pushing it home. Waiting a bit. Starting up and driving it up the hill into the garage. Losing confidence in the electronic system started here. And now I just need to dedicate the time to following your instructions above.