I have a john deere x530. The carburetor messed up and filled the carb with gas. I was mowing when this happened and the mower just died. I tried to restart it several times. Once during a restart attempt it hit solid. No noises were made it just moved extremely slow. I took the spark plugs out and one cylinder was full of gas. Gas was also running out of the muffler. I have since replaced the carb and changed the oil twice along with a new filter. Now I have to pulse the choke once I start it until it warms up. It idles fine but dies when I engage the deck. What are the bigger problems I now have.