I purchased a MF TO35 last week. it sat for a while and the kid i purchased it from replaced the plugs and plug wires. The coil was dead so i replaced that and rebuilt the carb, as well as place a new cap and rotor. When i try to fire it up the tractor is backfiring out of the exhast. I think a plug wire might be wrong. I know the firing order is 1, 3, 4, 2. I believe the rotor turns counter clockwise. If I am standing on the side of the tractor looking down at the distributor I believe #1 should be the upper right the way it is oriented. Can anyone help me with this. The way it is backfiring I think a wire is hooked up wrong.