Rear Defroster

Anyone had a problem with the rear defroster not fully clearing the glass? I got the car last November and I cannot remember if the problem existed before I got the windows tinted or after. I dealt with it over the winter but I cannot go any longer with a defroster that is not fully clearing the windows. I'm going back to the tint installer so that they can remove the tint and then I will use a product from Permatex that claims to repair damaged rear defroster grids and tabs. Hopefully this kit resolves the issue and then I'll have the rear glass tinted again. I may go to a different installer because I also have this problem where I hear static when the defroster is turned on. It didn't bother me much at all since I hardly listen to the radio while in the car so I've put it off.

Here's the link for the kit made by Permatex:
Professional Repair Systems : Permatex® Complete Rear Window Defogger Repair Kit