I was able to figure out how to fix my program that creates the RSS file that wesun_puzzle reads. It's annoying that sites change how they format things from time to time, but it's a nice way to at get at least a little programming in now and then.
The best thing was that it was a one-character fix. It was something that wasn't strictly necessary before, but it would have been good to have it that way. For those interested, the one character I added was 'g'.