Hi all. I'm trying to figure out what is going on with my entour. The pump is making a very loud noise but still works. I originally thought it was the pump itself so I replaced the part but I'm still having the same issue. Even when removing all hoses from the pump, just leaving it powered, the noise still persists. I've even swapped the power board to see if the issue is electrical but even that doesn't do much. Has anyone come across this issue? And if you have, what was the remedy?