Reduce space between 100% Stacked column charts

How can I remove the big white space between my two 100% stacked columns?

I have two 100% stack column bars reporting what percentage of those with a characteristic (Have_Characteristic where 0 = Don't have characteristic and 1 = Has characteristic) completed an activity (Completed where 0 = Did not complete and 1 = completed).

For some reason I have this big middle space with a "1" on the x-axis (see red scribble on screenshot below).  The table next to the chart shows the only values for both variables are either 0 or 1 and there are no missings.

Please help!

Thanks

Phil