Dhtmlx 3.6 layout cell padding/margin change

i am using dhtmlx 3.6 Layout with dhx_web skin. However the padding between cells is too big for my needs so i want to ask what should i modify in order to make the space between the cells less.

10x in advance.

any help?

Could you attach screenshot with marker space you need to decrease?

Here is a screen shot

It is web skin feature by design. You can contact us on project@dhtmlx.com to ask about customization.