Hmm me thinks you might be overdoing it with the glue. Tamiya extra thin normally evaporate away, the only sign left a slight glossy patch. These are often simple to magic away with a burnishing brush/glasfiber pencil. like this one: www.scalemodelshop.co.uk/product/4mm-glass-fibre-pencil-ak-interactive-ak-8058 If there is a blob, let it dry 110% then sand it off with some fine grade.I've tried just leaving the glue, and it created a "glue pool" which was visible in the paint work, so I thought I'd better do something else this time, since it was in a very visible place :-(