i removed all my tint, i used a hand steamer that i bought from walmart, you can get them at homedepot as well, used for removing wallpaper. i started in on corner and pulled really slow and had steam on it the tint as i was removing, and it go almost all of the glue off with it. Now there were a few spots that i had to use goof off to get the glue off. took a long ass time, but was better then paying someone. my back window was in the sun for a couple hours and was hot as hell, and i didnt even have to use steam, it came right off. but it wasnt old at all, only 2 yrs old. but that is just my little tidbit.