I imagine this is a simple problem and would appreciate any feedback. I thought I had my jointer set up properly but it seems when I am making successive cuts to try and flatten (pushing down against the out feed table) including trying to square a board (pressure against the out feed and the side), I end up cutting what I can best describe as a kind of progressive wedge. Each pass takes an initial cut from the leading edge of the board but the cut does not follow through to the end. By the time I have the board through, it is no longer cutting. It seems that no matter how many passes I take, The cut advances very slightly back on the board but I would run out of thickness at the leading edge before the entire board is hit by the cutters. What am I doing wrong?