- There is no wall stud behind the ends of these two sections of molding. (Otherwise, of course, I would use nails.)
- The surface behind them is painted gypsum wall board.
- The molding on the right is reasonably secure; however, I suspect that if I rely on it to hold the left molding against the wall it will be pulled away from the wall.
- I can replace the piece of molding on the right to eliminate the gap.
- Both pieces are installed on the same section of flat wall.
- The trim material is MDF.
- I doubt I have the skill the remove the right piece of trim without breaking it. I haven't enough of this material left to replace it.
- Most important: I'm referring to the fact that there's a gap between the wall and the molding on the left but not between the wall and the molding on the right.
- Is there an adhesive that would hold the left stick of molding to the painted surface behind it?
- Is there some form of mechanical fastener that would work?
Thanks for your help, including better ideas.