White Space between 2 Column in RDLC, Even if the Spacing is set to zero (i.e., Spacing:0cm)

Question

White Space exists in between 2 Column in RDLC:

I have set following property items,

Report Properties>Layout Tab> Column:2

Report Properties>Layout Tab> Spacing:0cm 

Even if the Spacing is set to zero, approximately '2cm' gap exists in between two Columns.

Please help me to avoid this gap.