Hello. I am replacing all the fans on the obsidian 650 D, as I'd like to increase airflow and possibly make it more silent. I know how to replace all of them besides one. There's one in the front of the case, which I think is a 140 mm fan but I'm not sure. Now this fan is right in between the drive bays and the front of the case, making it a very tight fit. So do I have to take out the drive bays to take this fan out?