Aligning Tick Marks with Data in Time Series Chart

I'm using the time series chart in perspective and want my tick marks aligned with my data. The data is logged most days at midnight so I just want a corresponding tick mark for each day. Trying to play with the number of tick marks doesn't work and yields something like this (this chart has a tick mark for each day elapsed:
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The offsets between the edge of the chart and the first tick mark throw this off. When I change tickCount to 0 I get this:
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This is almsot what I want, but it has two tick marks for each day. Is there a property I can change to get the tick marks aligned how I want them?