HDX and 4 Interfaces - Sync Issue

Hey guys!



i´ve been using 3 HD io´s Analog 16x16 with one HDX Card without issues so far.



now i wanted to add my HD Omni and can´t get them to Loop Sync. the HD Omni makes those typical syncing issue sounds/hiccups.



is there anything wrong with this setup although leaving the HD Omni out all 3 HD io´s work perfectly together:



HDX Port 1 goes to Primary Port on HD io Nr. 1, the Expansion Port goes to Primary Port on HD io Nr. 2.

HDX Port 2 goes to Primary Port on HD io Nr. 3, the Expansion Port goes to Primary Port on HD Omni.



Loop Master: HD io Nr. 1´s Loop Sync Out goes to HD io Nr. 2 Loop Sync In, its Loop Sync Out goes to HD io Nr. 3 Loop Sync In, its Loop Sync Out goes to HD Omni Loop Sync In, its Loop Sync Out goes to HD io Nr. 1 Loop Sync In.



this should be correct, right?



thanks!!!