here we go make it perfect clear it not your fault but you'll fix it for them.
get a tin of spraytack from your local hedlam/LGS change the nozzel for one off a WD40 can with the little red straw on it, make a very very small incision at the outside edge of the bubble, insert the straw give it a good spray about and wiggle the straw and place a heavy flat weight on top till it drys.
And residue take it off with a spot of sovent.