Moding a fan in P-180

[kopke]

I'm having a trolbul to get a fan in the lower front slot of my P-180. It yust will not get in. How on earth can I get it in ther?

 

[delluser1]

It doesn't get a fan in the lower front, the fan mount is between the hard drive cage and psu, using a pull thru action to cool the hard drives.