I am restoring a 1995 900 series Ranch King. I have an engine problem I need some advice on. It starts and runs with a little blue smoke at starting. But running the exhaust sounds like it is stuttering. If you pull the plug wire while it is running one side will cause the engine to die and the other will just lose some rpm but keep running. Ihave put a good coil and plugs from a known good engine rebuilt the carb and checked compression (approx 100 psi both side. Do any of you have any ideas of what I am missing or need to check to get the engine running. This tractor has set for about 5 years due to an engine fire from a gas line leak.