Be sure to rinse beans before using.
If you want your beans to be softer, then add an additional 5-10 minutes into the initial pressure cooking stage of the beans.
If you want the sauce to be even more thick, you can use a 1:1 cornstarch slurry (1 tablespoon corn starch mixed with 1 tablespoon water), and then add to pot (must mix before adding to beans).
Make sure to get as many stuck bits off the bottom of your pot as possible to prevent a burn notice.