I am going to have to put a 45 degree elbow to get my steam hood to vent. Will this restrict the flow and cause any problems? I have a 2 by 8 evaporator and I will be suspending a 3 by 7 steam hood about 18 inches over my rig. I could cut a new hole but there is already one close and I do not want to cut any more holes in my roof if I can avoid it. Thanks.

Chris