Need a Vaadin Grid Expert to design a Mulirow Grid

I have implemented Vaadin for one of my project. But now I am facing critical issues. I have a grid which consist of 3 grids. My center grid has 2 rows for every one row in the 1st and 3rd grids. Becuase of this I had to use 3 grids. Now I want hide the scrollbars which still appearing and want to scroll the 3 grids at the same time. For now I am scrolling using a panel but that is not helpful becuase the headers get hidden while scrolling. So I am planning to scroll 3 grids at the same time. But the main issue is I cannot remove those scroll bars. If want to change this to a single grid if possible. So I would appreciate your advice on how to overcome this issue. For your reference I am enclosing the screenshot of my application. I am looking for Vaadin experts who can solve this problem.