Question about case fan placement on Corsair 500R


So I got my case setup and the manual says that it can accommodate 2 x 140mm fans top mounted. But when I installed the first fan mounted, the second one wouldn't fit correctly. The fans I'm using are made by Thermalright (don't have exact model number). So one fan bay has a fan installed but the other one is wide open. So the question is do I have my fans mounted correctly? I can post a picture of the build and my fans if that helps but I'm not at that particular PC right now.