I just changed my spark plugs out and when I try to start it idles very rough and shakes. I checked the gap on the old plugs and they were set at .044 and the car ran smoooth. The new plugs I put in were set at .030 because from what I saw that was the correct Spark Plug gap for my model. Should I pull the new ones out and try them at .044 and go from there? Thanks to anyone that can help! The exhaust also smells more gassy if that's any help.