When applying a coat of latex primer to new drywall, I have two areas that the top layer of the drywall came off with the roller. What has caused this???

We prime the walls with a latex primer after removing wallpaper and the primer had a reaction from the adhesive. What can we do since we already used latex primer?

I need to know how to paint the indoor railings by my front door and stairs. They are old and the paint is chipped on the edges, it has oil base paint in white. Is there any easy technique for sanding as I have bad arms. What do I use