So I watched and around 7min mark he talks about it. But still...... These crowns were way tight. Had them milled three times (Two different mill centers) and after having to “fit” used the third set. What changed? I want to blame the i tero model. They wanted pics from me but all now. My concern is 4ant crowns now to do. Am I to understand that if I would use .035 for additional spacing the margin now would be open? I feel some molars are not fitting as they did when first starting having to use these models too. My parameter have stayed same.