A little hard to tell from the video, but it looks like the coulter is too far back, too low, and too close to the landside. The coulter should run just a few inches deep to cut the residue or sod. It generally runs a half inch or inch to the left of the landside. If it is too deep it will not cut the residue, just push it along. It needs to roll on to the residue like a scissor cut. Looks like it should move forward a few inches as well.