Been too busy to get it setup very far, but did get the drain and return lines plumbed. Got a plan to pull the return lines in closer to the tank (will post more later). It seems to me that the plumbing puts a lot of upward force on the overflow box. See pic for more details. When I fill the tank, this will compress the pad, and apply even more pressure up on the overflow box. Since this is just silicone on, any concern that with enough pressure it would peel it off? Considering cutting the pipes and installing a small section of flex pipe to relieve the strain.