Thanks for the replies guys.I did turn off the Casio to make the sync changes occur. It turns out that I needed to delve much deeper into the Yamaha MOX menus. There is located a quick setup function which included setting the midi clock to "out." I also needed to turn off the keyboard transmit to avoid the yamaha keyboard playing notes on the casio. This has fixed the timing when I'm using the Casio as a slave. I have got some pretty in your face results out of syncing the Yamaha drums and other arpeggios with the Casio phrase sampler. I want to use a bass loop live and the casio seems to do the trick. Will probably get a dedicated bass loop synth eventually because the casio as a lead synth is so playable... Cheers guysSteve