So I tried the plug clean up, seafoam and oil in the carb, and some gumout and starter fluid for good measure. I got it to kick over and run for maybe 15 seconds, then it would stop when it ran out of stuff to burn. I'm now guessing that the carb initially flooded the engine right before it gave up the ghost and stopped working because it seems like it's not getting fuel.

I'm going to check the filters and lines to see if I'm getting gas to the carb. If that looks good, time for a carb rebuild or just rebuilt one from Sterling.

Thanks for your help and encouragement. Any further suggestions are appreciated.