Update: I posted on another thread that it was taking a long time to get my electrode from RVeparts.com. I finally did get it. They were closed for 2 weeks during Christmas. It would have been nice to get an email saying that, or post it on their website, but in the end, I did get my part.
I changed out the electrode this morning, and I still have a very weak spark. I checked the voltage going to the reignitor, and I have over 12 volts, so my next plan is to get a new reignitor. Another $44 with shipping. I'm keeping my fingers crossed. I can't think of anything else it could be. The grounds check out, so it has to be that. I hope! The price at RVeparts and at Amazon were the same when shipping was included. Prime was not available on that part at Amazon. I'm going to give RVeparts another shot. I hope they are a lot faster this time.