i gotta change my head gasket,but another problem is it doesnt seem like the coolant is moving through the motor,when i open the rad cap when the motor is running i dont see any movement,is this normal?..also i got a hose leaking and i cant get it to seal...is there an aftermarket hose that i can use for coolant?..i completly removed my heater/ac system and i rerouted the hose from the head to the block with one loop,is that the correct way to do that?..any info will help