I may get flamed for this (literally
) but I've been using small amounts of unleaded gasoline on a paper towel to wipe off glue residue. It works so well I rarely use isopropanol anymore. I have a tiny bottle I collect from draining the float bowl on my dirtbike after I ride it.
If you do this use a tiny amount that you could manage if it goes up in flames. Lighter fluid is naphtha which is similar to unleaded gas. Keep a fire extinguisher handy. No open sparks or flames.