I use the glue when it's a "stock replacement" type panel. However, most of my work is body mods on things that I just don't trust the glue....chopped tops, etc. For a plain old quarter panel R&R, I'll use the glue all the time. Never had any trouble with paint or anything else on the glued joints, just a matter of getting the fit and overlap right and following the manufacturer's instructions and recomendations. First panel I glued on, I had the rep right there helping!!!!