spent the last week working on a 78 fj40 i bought with a bad head gasket,no radiator or water pump greasy nasty mess!! although it would start and run ok. so i just did new batt. hoses radiator thermostat rebuilt and resurfaced head, head gasket intake gasket cap rotor plugs wires etc etc.... it runs terrible, like it is running on 3 cylinders! if i can get it to start it ran better before! ive gone over all vacume areas, checked firing order (put the wires on the plugs according to the numbers emossed on the new cap in order from the front of the motor to the back 1-2-3-4-5-6) three plugs seem the be burning well while 3 are kinda getting carboned/oil slightly. put HEAT in the fuel and 7 gallons of freash gas, carb seems ok. I DID REMOVE the stock heat flapper thing that pushes heat up to the bottom of the intake in the stock exhaust manifold because it looked restrictive to me, could this be the issue, it will barley start/run like it is missing on 2-3 cylinders and kinda poofing out of the carb, wont even come close to idleing. any ideas???? help please! thx