I aquired a 2003 rx1 from a friend. They bought 2 of them and his son hit a oncoming snowmobile jumping a hill and totaled the sled. Anyway they called it quits for snowmobiling.He parked the rx1 for like 3 yrs.I drained the gas, changed the oil and checked all fluids. The carbs looked good from the outside and i pulled airbox off and carbs look new on the inside. I didnt go as far as pullling all the carbs off and opening them up. Anyway it seems to only be running on 2 cylinders,i pulled the wires on the ignition coils 1 and 2 and it didnt make a difference. Then i pulled wires on 3rd and 4th ignition coils and it stalled out. I have spare ignition coils, i tried and that didnt help. What else can i check?