In response to your posting. Your dealer may
not have any complaints,but if you check the
BBB for the name Simonton in West Virginia, you
will find there is a whole grab bag of complaints
against Simonton windows.
I have had my builder,and the Window supplier
both at my house at the same time, and they
could find nothing wrong with the installation.
Somehow the air is infiltrating through the
window assembly itself.