sync~ MIDI clock problem

Hi all,

I'm trying to use sync~ connected to midiout to slave the master clock of my Clavia Nord Stage 2 keyboard to Max.
However, it seems to receive clock messages only at the bpm rate, not at ppq*bpm rate, and thus does not sync. The sync~ also seems to bang at outlet 3 only at the bpm rate, not at ppq*bpm...

I have build a patch that uses either sync~ or my custom MIDI clock using metro and an i 248, only the latter works for me. Am I doing something wrong wiring up the sync~ object?

Thanks for any insights,
Best, Boris