Im changing from a 4 blade fan to a 6 blade. I noticed that the new fan has bent tips on the ends of the blades. Are these tips supposted to be bent towards the engine side or towards the radiator side? Presently I have them pointed to the engine side but it feels like the air is blowing out the sides of the fan instead of to the engine, yet if I put paper in front of the radiator, it will draw the paper in. I am currently having a over heating problem. The 6 blade fan is from a a/c mopar. Thanks