One thing is for certain: If you only have two refineries and one of them goes down unexpectedly, you are in for a rough third quarter. That's exactly what happened to CVR Refining (NYSE:CVRR), but the pain didn't stop there. 

In this video, Fool.com contributor Aimee Duffy takes a look at the problem of variable MLPs in the context of CVR Refining's recent earnings release, while illuminating the difference between the small refiner and its bigger peers like Western Refining (NYSE:WNR) and Marathon Petroleum (NYSE:MPC) when it comes to navigating headwinds in the industry.