Hi everyone. I am using Dynaflex 230 50-year latex caulk on new and existing door casings. I am using Zinser Cover Stain water based primer over the casings and new caulk and am having a problem. As the primer dries, it cracks over the new caulk. As a test, I have allowed the caulk to dry for up to a week so I know the caulk is cured and not continuing to shrink. The cracking gives an alligator skin look just on the new caulk, not the surrounding wood. I notice it more if I thin the primer with water or Floetrol. If the primer is uncut it doesn't seem as bad. But unthinned, and the stuff dries so fast I get nasty brush marks which require sanding before topcoating. Any ideas on this one? Thanks a lot.