I'm new here, so go easy. I just ordered some EPT chips. I'm sure they are about the same size as most other ceramics. The specs say they are 3.3mm thick...multiply that by 20 = 66.0 . Does that mean I can feel confident that a 66.7mm tray will work for me? I know the Paulsons say they are 3.3mm thick as well. Many options and I don't have the chips sitting in front of me yet, but I would like to have a nice home for them when they arrive. Any thoughts?