I have a SR and pieced together a heater hose setup when I first installed the motor. One of the hoses ripped so I decided to buy the kit that XAT sells. I installed the kit, filled up the coolant and for some reason after the car warms up, it starts to overheat, and there's steam and water dripping from the coolant hose lines going into the firewall. I've observed the hoses and they're on tight. Does anyone know what is wrong with it?