if that doesn't work our local guy, pretty big, "Altapac" suggested getting a "Caramel Wheel". They're about $12 and they go on the end of a drill bit. and you just use it to sand/rub the glue back. bneed to be very careful with it. You can burn the paint so go slow.
This is the information I was given when asking the same thing for a VT. I haven't tried it but they swear by it. or they will charge $50 a door to do it for u
I hope this helps,
Robbie