I ordered a panasonic bathroom fan and the ceiling joists run parallel to the gable wall I'm exiting out of so I'd have to curve the vent up slightly to get over the joists. Is that initial up pitch to get over the joist going to cause a possible condensation issue inside the vent or will I be OK? The only other option would be to exit out the bottom of a soffit and I read that isn't a good idea. Thoughts?