Haven't used them myself (no subject matter that I am interested in at this time). However, several of the guys in my local modeling club have used them to great effect and after using them with an Eduard kit they have started looking for the aftermarket sets for other A/C builds as well. I haven't heard of any sticking problems, perhaps proper storage was the problem. Any masking tape is subject to heat and humidity. A subject that us Midwestern USA residents know well enough.