There has been a run of glue spot issues that have not been apparent until folks have started putting the finish on.
I pulled out a kit today and after I gave it (just the top) a good sand with 240grit I stood there and stared at it for a while wondering if I could think of anything that would show up the glue if there was any present.
Then I tried a rag dampened with water and guess what? The glue showed up as a shiny patch.
Unfortunately the photos I took did not show it....
I sanded and repeated until the offending stuff was gone.
This will help on the basswood bodies but on the capped bodies I would recommend the Gavmeister's method.