thats odd, cause ive mentioned many times that the glue dots can be an issue. I've left marks on my steels many times cause of it. Its kinda hit and miss tho, but i think its more miss when you know how to deal with it before hand. if you know it has a glue dot and its been back there for a long time its best to heat the glue dot up first with like a hair dryer. That or , if you peel very slowly you can 75?% of the time succeed. Tho sometimes even if careful it can steel take a lil paint off steel.
I cant even tell whats going on with your steel. did it have just glue dots? or what are those runny lines? more glue?
edit: i see you said, with a little care, where as i thought you said without.
ive had indentions on ironpacks from security tab things presssed up against the steel. and ironpacks were thicker guage, cant imagine the steels that have sat for years if people have those.