Is there any way to specify the size of the chunks that the Splitter creates?

It looks like it creates approximately 500MB pieces. I'd like to make it bigger so that there are fewer pieces.

I know it's strictly a cosmetic thing, but I hate seeing so many pieces. If I could do 4GB pieces (the max for FAT32) then my image would be 3 pieces instead of the 26 that it is now. :D

Thanks!
Wayne