I am new to flexi and I am trying to print a 346" x 98" wall wrap. I want to tile it into 6 vertical panels using Flexi Production Manager. When I input the desired size and go to the tiling tab the program wont let me make vertical only tiles. It is defaulting itself into two long horizontal panels. I can add vertical panels but it will not let me eliminate the horizontal tile? Any ideas how to correct this?