Custom Ringtones Show Up in iTunes Folder, but Not on iPhone

I've recently upgraded from a 3GS to a 4G. I have a few custom ringtones that I created from .MP3 files (converted to .m4r files). I had these same ringtones installed on my 3GS and want them on my 4G.

I transferred to my 4G by dragging them from the Windows folder to the iTunes device folder. The 5 ringtones show up in iTunes under the Ringtones folder. Only one of them shows up on the phone as being transferred.

I had done this a couple of days ago, and noticed then that only one ringtone was being shown under Custom Ringtones on my phone. Tonight, I uninstalled them all, rebooted my phone, and then re-dragged the files as per above. Again, all show up in the folder on the iPhone in iTunes, but one shows up on the phone. This is now a different one than a couple of days ago.

Soooo... what can be causing this? The files are apparently on my phone, but not appearing in the usable list. I need some help in resolving this. I've looked through these forums and seen similar issues. There doesn't seem to be a 'proper' way to do this. I manage my phone manually, and have not done a 'sync' with the ringtones as they show up in the folder... (I don't really see the need to sync if they're appearing in iTunes as on the phone).

Thanks!