Lid for drop lid box will not lie flat, it “rocks” slightly in one direction
I’m building small decorative boxes and sometimes the lid which insets into the box will “rock” on one side. Lid bottom has been sanded flat, and the rabbeted lid support appears flat and uniform and the mitered corners appear flat, no stepping, etc.
What would be a good way to approach fixing this? Degree of rocking is about 1/32nd of an inch, possibly a tad more. Several of my other boxes lie flat- I cannot see the difference.
Thanks for your suggestions.