You have air in the lines. You don't need glycol if your machine is inside. They went with glycol because the water froze in shipping to cold climate locations. There is a reservoir on the right side near the front, top hose goes to the back with a check valve connection. Bottom hose goes to...
I would leave it in. I think you water flow would be too fast and you would not soak your grains good enough to reach your numbers. Your hops are controlled by the length of time and the holes in the bottom of the adjunct compartments.
Kevin is selling the grommets on ebay, you can make a tube using a 3/8" OD silicone hose, cut a keg tube to use for the top and a piece for the bottom think it's 7 1/2" long..