That's very interesting, Kittyroo.. I never heard of that before!
My nephew had major issues with this as well, and my sister was told to use a nasal spray to loosen the mucus so his nose would run. I think it was just a saline nasal spray, but it was intended for infants (I believe). So you might want to look into that, but if you get the chance, definitely talk to you ped about it. Congrats!