Highcharts multiple panes, with plotOptions Compare Percent in only one pane - highcharts

Question

I have two panes (yAxis:0 and yAxis:1) for two different sets of data series. When I use plotOptions Compare set to Percent, the second pane (yAxis:1) becomes blank (or actually I think the curve is pushed to the very top, but still not visible). If I remove the plotOptions section, then the second pane comes out just like I want it. But then I don't get the first pane the way I want it (normalized so I can see the percentage difference rather than absolute value).
Is there a way to apply the plotOptions only to the first pane / yAxis:0?
window.chart = new Highcharts.StockChart({
chart: {
renderTo : 'container'
},
title: {
text : 'Relative rates for <?=$stock1?>, <?=$stock2?>, and OMX30, and positions taken'
},
rangeSelector: {
buttons: [{
type: 'month',
count: 1,
text: '1m'
}, {
type: 'month',
count: 3,
text: '3m'
}, {
type: 'month',
count: 6,
text: '6m'
}, {
type: 'ytd',
text: 'YTD'
}, {
type: 'year',
count: 1,
text: '1y'
}, {
type: 'year',
count: 4,
text: '4y'
}, {
type: 'all',
text: 'All'
}],
selected: 5
},
yAxis: [{
title: {
text: 'Normalized rates'
},
height: 250,
labels: {
formatter: function() {
return (this.value > 0 ? '+' : '') + this.value + '%';
}
},
plotLines: [{
value: 0,
width: 2,
color: 'silver'
}]
}, {
title: {
text: 'Positions taken'
},
top: 300,
height: 100,
offset: 0,
plotLines: [{
value: 0,
width: 2,
color: 'silver'
}]
}],
xAxis: {
type: 'datetime',
minRange: 1728000000 //Minimibredden på grafen i ms
},
plotOptions: {
series: {
compare: 'percent'
}
},
series: [{
name : '<?=$stock1?>',
data : json_data,
yAxis : 0,
tooltip: {
yDecimals: 2
}
},{
name : '<?=$stock2?>',
data : json_data2,
yAxis : 0,
tooltip: {
yDecimals: 2
}
},{
name : 'OMX30',
data : json_data3,
yAxis : 0,
tooltip: {
yDecimals: 2
}
},{
name : '<?=$stock1?>',
data : json_data4,
yAxis : 1,
tooltip: {
yDecimals: 1
}
},{
name : '<?=$stock2?>',
data : json_data5,
yAxis : 1,
tooltip: {
yDecimals: 1
}
}]
});
});