You're either pouring too fast,or not tipping the BK enough to get an even flow straight into the funnel,strainer,etc. Since I have plastic FV's,I place a large fine mesh strainer ofer the top of the fermenter & pour in a circular pattern. This has the effect of making the wort come out the bottom of the strainer like rain,improving aeration a bit. Dito with top off water.
Everything works if ya let it-Roady(meatloaf)