I have a Fd731v that has a couple problems. 1: it is loosing coolant and it is not leaking. 2: there is oil getting into the coolant (no coolant in the oil). I am well aware of the waterpump in the oil pan and last year I replaced those seals and gaskets but the problem persists. Now I am going to replace the head gaskets to see if that will remedy the problem. Does anyone know the torque specs for the head bolts?