Alright, so this morning I noticed gas leaking from somewhere on the engine. I unplugged the line.
This afternoon, I switched the plugs. The one on the left(looking at front of mower) was the one we were concerned was not firing. The one on the right was the one that was making noises and possibly needed a new gasket.
So....
After changing the plugs. I tried to start the engine. When I turned it over, gas spewed out of the right head, like nobody's business. I'm still in my work clothes so I didn't try this again. I will get the gasket replaced... Which is weird because it's brand new!
Why would the change in spark plugs cause the gas to Coke oht like that? When it didn't before. Maybe the gasket just finally reached the tipping point?