How to get Excel chart to ignore zero values, widen columns, and move axis

Hi,

I am using Excel 2010 in 2003 compatibility mode. I am trying to create a graph that shows movement of results up or down from a baseline of 90%. I'm having several problems with it:

1- The columns are all squashed up as though it is leaving space for the other days of the week. I want them spread out across the gap as the data is shown at weekly intervals, not daily.

2 - I want the axis to cross at 90% which is our target, however, this moves the axis category names into the middle of the graph. Can these be moved back down to the bottom of the chart?

3 - I have selected for zero values to be shown as gaps, however, they are still appearing as zero making the chart unreadable.

i have attached a stripped down version of my original sheet. Would appreciate any advice.

Thanks,