Rear window defroster issue?

Ilovejdm07

I use to work at a tint shop, if you had any tint removed.... You have to you steam to remove the old tint. Becuse if the use blades they hit the defrost lines in the inside they f**k it up..... You can tell if the hit the defrost line make sure there all even color you be able to to tell if the hit it with a blade or not. Them cutting the tint on the outside doesn't have to do anything with it because the line are in the inside!!!!!!!