Ive had residue from tamiya tape and I believe its caused the paint being a bit to thick . Thinners in the paint makes glue on the tape softer on the edges so when you remove the tape it leaves the glue under the paint edge. Also if your tape gets a bit dirty on the side where the glue is then that dirt goes into your paint job . The best thing to remove the glue is White spirits once the paint is dry. I hope this helps