Fantastic bit of masking there Karl and for what it's worth, fitting of any clear parts is one of the last things I do after all the painting, decaling, clear sprays and touching up and then it's only with just a dab of glue to position them. I use fine syringe needles for gluing, dipped in a small pool of glue, you only pick up a miniscule amount, but enough to make an initial connection.