I agree with this @Andrew Marines, try to move one or both of your CM-S to the DM zone and see if it helps create what you like. I find that often the WCB-S/A are dangerous when we counter-press, force a long ball and recycle the attack through the DMs - often it's when the WCB's are able to press forward and make an assist/key pass. I have to say though, it seems to depend on individual traits very much: with the same WCB-S role, someone like Ben White or Nicklas Sule will push forward but lay it off short or cross from deep most of the time, whereas more natural FBs like Tierney, Tomiyasu or Tavares will press forward and cross from the byline a bit more often.