most seem to use goof-off, just an fyi, goof-off is 60% to 80% acetone, 7% to 13% xylene and 1% to 5% each of ethylbenzene and methanol. And it smells nice!
Here's a link to the sds (safety data sheet)
https://content.interlinebrands.com/product/document/10180/1204882_sds_e.pdf
ftfy.
Sometimes you've got to let Goo-Be-Gone sit for 30 minutes then use a plastic wedge and everything comes off.
this is what I use on just about anything sticky that needs to be removed from the paint:
Whizzy Wheel Car Decal and Sticker Remover with Drill Adapter Tool Kit | Adhesive Decal Remover Eraser Wheel - Eraser Wheel Decal Remover/Decal Eraser Wheel | Adhesive Remover/Sticker Remover Tool