eMax crowns, should the face of the crown be smooth?

I recently had emax crown placed on front six teeth. I am reasonably happy with how they look although some are bit longer than others but they look natural i suppose.. My big issue is they all feel not rough but bumpy like heavy lines running down the front of each tooth.. you can see this quite clearly in certain light and can feel it with my tongue.. my partner could quite clearly feel this with her finger.. I am over reacting or should they be smooth to touch and feel? Thanks