Tim, thank you for the question. In fact, I have experienced the same thing and addressed this with Lund in the past. The pump-in piping is 3/4" but its under high pressure with the power of the pumps that are in the system. The pipe-out is 1 1/8" but is not under pressure. What Lund suggested for me was to adjust the aerator pump head (the white one... not the red for pump in and pump out) by turning it clockwise a 1/2 turn at a time until you no longer experience the issue. This reduces the amount of water flowing in so it doesn't supersede the speed of the drain. There is still lots of water going through for the fish but should alleviate the over flow concern for you. I called Gussy yesterday to ask him about this and he's not had the issue in the past so I suspect they may get hit or loosen perhaps in shipping. I hope this helps!

@@chrishockleyoutdoors5419 Thanks Chris, I'll give that a try. I also have a 90 degree fitting for the outflow port that I am ready to install instead of the straight fitting that is used now; that should further help to accelerate the outflow speed but install is going to mean tearing a couple things apart and I do not want to go through that deal or risk damage to the livewell if I don't have to. The rest of the boat has been a dream for rigging electronics, storage, comfort, fishability and handling. I'll keep you posted on how things work out for me. Thanks!