Wax Paper sticking
I still think the key is to govern the amount of adhesive used.
My experience is that the paper sticking has never been the problem, easy to sand off, but your still left with a gob of glue that is not so easy to deal with.
Even though the 6 mil poly, or MK backing paper, or foil, or whaterver doesnt adhere to the glue, arent you still left with a puddle of unusable glu with a flat spot on top?
Go easy on the glue, then remove the part and glue while manipulating the flow of the glue by turning it in your hands to cover what needs to be covered......no?