I found my temporary solution to this. I’ve modified the maxBarWidth variable of the Chart.prototype.renderColumn function in the canvasjs.js.
From var maxBarWidth = (this.width * .15); , I changed it into var maxBarWidth = (this.width * .063); //or whatever value you like to fit in the chart
Still, its temporary. Hope the width setting will be available soon.
Thanks in advance!
-chris