First a painter I am not, but over the last 20 or so years I have done enough to know the proper materials, equipment etc just not my everyday thing. . I rarely paint for clients unless it is a touch up or ultra small on a repair we have done. Now the problem a 3x18 hallway remodel 10 to 15 year old latex (eggshell sheen), scuff sanded primed with Kilz premium tinted a shade lighter than topcoat. Top coated with Ben Moore Regal select. Now fast forward wall gets nicked. I come in to do a sand skim and coat on the damaged area. When sanding the paint starts peeling and keeps peeling. Evidently the kilz did not even think of sticking. So we are looking at stripping sanding and repainting at least this one section. To prime, not to prime, ( zinnser, kilz,oil based, latex) first time I ever had a problem with kilz but now I'm gun shy.