Hey guys am loving my Gaia but have this midi problem which may not be gaia related

I am using the GAIA as the master and slaving my other synths.
They are all midi sync beautifully but when i play the GAIA it transmits midi messages and the other synths play as well.
How can I only send midi clock but not the note midi messages ?


Originally I had the GAIA slaved from another synth but the GAIA would not send midi clock when set to MIDI sync.