I'm not sure what windows Mr Nordheim has but I can tell you I have the PRO FINISH Single Hung and they are terrible.
I've had Simonton field service reps out and they said... "They are performing at or above spec."
I have to put a 3M insulating kits in to stop the drafts. With a 20 MPH wind the kit bulges into my livingroom a good 3 to 4 inches.
I'm not sure how the rep could tell how they were performing without test equpt.? And I was also curious why he stuffed foam insulating squares down the sides of a window that is suppose to be AAMA tested and Energy Star rated???
I have complained to the BBB and waiting for a rep to stop over to evaluate them again...
My neighbors are having the same problems not to mention 7 seal fractures and the oldest home is only 5 years old????