Having trouble exposing a tmpfs via NFS

Well, as the title says... I have created a tmpfs mount on my server (/mnt/ram) and I have a bind mount set up so that it's accessible on /home/user/RAM. However, the issue is that when I try to access this directory via NFS, I am not accessing the ram disk, but the hard drive directory at /home/user/RAM. I can tell that this is the case because of the amount of free disk space report, as well as adding a file via NFS to this directory, does not add it to the underlying directory in /mnt.

I have the home directory in /etc/exports and I can access it normally (other than the ram disk bind mount). I do have the crossmnt option enabled for the export, and this does work for other directories that point to other drives mounted in the same /mnt folder. For example /home/user/Bittorrent points to /mnt/d2 and I am able to access that just fine over NFS, and it reports the correct amount of free space on that drive when I do so.

Any reason that I am having so much trouble with this? It seems like it should work the way I'm trying to do it... but clearly I am doing something wrong.

Please & thank you.