2" pvc

Hello, I am installing an RDWC system using 2" Uniseals, 2" PVC, and 27L HDX totes. I cut my holes in the totes using a 3" hole drill bit, but when I place the Uniseal inside the hole, it pops in fairly easily and is not very tight. Even when I insert the 2" PVC pipe into the Uniseal, it just...