I recently removed wallpaper to discover that the walls underneath have never been painted before. As I started priming today, I noticed that the primer became immediately tacky. I tried not to go over any areas more than once, but overlap is inevitable, leaving me with a tacky, clumpy mess. Is primer supposed to act like this? I always thought it went on easily, giving you smooth surface on which to paint. Any suggestions on what to expect, and application techniques would be greatly appreciated!