Robert:

If the automotive spray primer doesn't work out for you, and you opt to go back to the diluted white wood glue, be sure to use a paint roller to apply the diluted white glue; not a brush. Brushing won't work here because the water will soften up the skim coat of joint compound, and brushing it will just make a mess. And, of course, if you roll, don't keep rolling the same area over and over again. Roll it as best you can to saturate the skim coat with dilute adhesive, and then move on to the next area. If you don't think you've added enough adhesive, don't go back. You can always add more glue with the next rolling. With each application of adhesive, the skim coat will get a bit harder.

And, of course, the dilute wood glue can be washed out of the roller sleeve just like latex paint. If you plan on applying multiple coats, keep the roller sleeve and handle and the paint tray in separate plastic bags to prevent evaporation of water from them.