Product was perfect, their is a learning curve with the silicone bars for fitting. I suggest maybe purchasing additional ones. I made a perfect mold at first then trimmed excess off after to find out the part I cut off actually is what held them up. Also if you push them too hard into your mouth the back prongs get pushed too far back and does not hold to your teeth. After I did it a few times I got better at it, problem was I needed more fitting bars and did not have time to wait for them before I was using my fronts. Outside of that everyone at the party complimented my grill and looked awesome.