CDJ Multi-Changer Question/Problem

I'm having a bit of trouble with CDJ in a multi-changer configuration. I have a CDX-350 and a CDX300, each of which are connected to my slink-e. They are also interconnected in a master-slave configuration as this appears to be the only way that I can get the audio pass thru to work correctly (I only have one spare audio input on my amp).

The problem is this: When I invoke CDJ slink-e recognizes 4 changers instead of only two. When I select a disk CDJ gets confused and usually reassigns it from player 1 to to player 3 or from player 2 to player 4. I can still play the disk correctly from the library view but when I add selections from reassigned disks to the playlist and try to play them CDJ just skips them.

I tried disconnecting the s-link connection between the 2 changes but the audio from the slave is not passed to the amp. I read the FAQ's and compatibility info and they seem to imply that what I'm trying to do is possible.