Just getting my 55 set up and had to cut the tube down about an inch or so on the spray bar of my 2217 to make it fit the side of the tank. All was well for a few hours. Then I returned to the room the tank is in and could hear a distinct whistling noise. If I cover up any one of the holes in the spray bar the noise stops. I'm assuming there is just the right amount of pressure with one less hole in the bar to make the noise. Should I use my drill to make the holes slightly bigger or is there a better way to do this before I take my drill to my spray bar?