We maybe have to go deeper.

1) Does the MIDIclock out work for you under any circumstances ?

2) Have you tried it with the other effects ?

3) What exactly does it not do that you expect it to (i.e. define work).

Some side issues (sorry if these are obvious) – have you made sure that:

1) You are using the latest S/W version ?

2) CLK OUT is set to ON ?

3) OUTPUT is set to XMT ?