HMMM wow this a bit of a first for me.. 1) Bill and Tom agree on something, 2) as a husband, yeah when my wife get’s on my butt about anything I all of a sudden think of some work I have to do to my Bike, Truck, toe nails, anything. However, after a heart to heart and the look of concern in my kids eye’s changed a lot for me; especially when my PFT’s got into the 30’s (they are back up now). given the fact that you have 3 biological children he might feel more open to the fact that he may be a “symptomatic carrier” this can cause asthma, low PFT’s etc. but it is NOT CF. Or on the other hand he is in that very rare 1% that has CF and Has Bio Children. Either way he should have a Genetic Run Down, sweat test almost always reveal false on SC (symptomatic carriers). He owes it to himself, as a father and a husband. And as a father and a husband I’ve been scared many a time; It usually starts with (wife) “I was out and picked up a couple of things at Kohl’s, they were on sale”; (daughters) “you’ll really like him he so sweet”… But as for raising the PFT’s before med’s, exercise, Sing real loud, do Karaoke, take a 30 minute walk nightly, and most of all, kill the fear of the unknown. Stress hurts me more than a 4 y/o strait out of the day care center, just saying. Best of luck.