[Help Wordpress] Slider is resizing to unwanted dimension

Hi, I use the Wordpress plugin and have a problem with the slider re-sizing itself to 600x400 when published. The preview shows is properly but not in the frontend.

I use the default template - width: 627x314 - No scaling - Tabs

Looking at the generated code in the frontend >

I don't know where those size are coming from... can you please help?

http://thisisbeyond.com/beta/paxton/

Thanks Patrick

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help.dimsemenov.com