I'm a bit puzzled by the heater hoses. The short one has one regular hole and one enlarged hole. The other hose has two regular holes. Could this be right ? Im a bit reluctant to cut out the old hose and risk not getting the new one in. I'm considdering just cutting of the hoses that goes down to the wheel weel and put in a "blind" plug in them . It should do the same as changing the hoses.