candle look/feel different after adding second data series

[flybuzz]

So I have 500 tick mes chart setup with cumulative delta at the bottom. I was trying to see if I could include MNQ's cumulative delta below that. But as soon as I added second data series (MNQ 500 ticks), the whole chart starts to look different than having MES alone by itself. The candles look skinnier, stretched out and more spacing between them. Ideally, I don't even want the MNQ data feed on the screen, I just need MNQ cumulative delta at the bottom. I don't think Ninjatrader has that functionality, where you can just borrow data feed from a different window without inserting into current window that's why I am doing it. But it makes MES candles look funky. Is there anyway around that?