I had invisalign placed today for my second set of trays. At first, the tech and I were having problem putting on the bottom tray. She called the dentist and he tried to put them on me. He could not put them on. What he did was cut the molar part of it on both sides. It only left the front part of the invisalign. Is it okay to do that? How is it going to help in shifting my whole bottom teeth? Aren't they suppossed to fit if they made for my teeth?