title: Make Highcharts' setExtremes off tick with two yAxis
body: <p>I need to set minimum and maximum of yAxis of a Highcharts' chart. And I do NOT want the minimum and maximum to round to the ticks.</p>
  
  <p>Highcharts documentation offers an example, which works great:</p>
  
  <p><a href="http://jsfiddle.net/gh/get/jquery/1.7.2/highslide-software/highcharts.com/tree/master/samples/highcharts/members/axis-setextremes-off-ticks/" rel="nofollow">http://jsfiddle.net/gh/get/jquery/1.7.2/highslide-software/highcharts.com/tree/master/samples/highcharts/members/axis-setextremes-off-ticks/</a></p>
  
  <pre><code>var chart = $('#container').highcharts(),
      yAxis = chart.yAxis[0];
  
      yAxis.options.startOnTick = false;
      yAxis.options.endOnTick = false;
  
      chart.yAxis[0].setExtremes(40, 210);
  </code></pre>
  
  <p>But when I do it with two y-axis, it doesn't work:</p>
  
  <p><a href="http://jsfiddle.net/4kLyf04a/" rel="nofollow">http://jsfiddle.net/4kLyf04a/</a></p>
  
  <p>The minimum and maximum that chart uses are not what I set in the code. Anyone knows why?</p>