NumberAxis Label too small

[new2jfree2011]

I am using 1.0.11 Jfreechart. I created a small horizontal barchart (300x70) with only one bar, The labels for the NumberAxis are too small for viewing. It seems like the numbers are squished. When increasing the font size, the numbers are bigger, but unless I make the chart height big enough (300 x 150), then the lables will look normal, but I really don't want to increase the height.

I know the space allocated for the labels is calculated somehow, is there a way to change the calcuation for the space of the labels? So I can use the default font size label, and have half of the space for the bar and half for the labels?

Thanks.