Unfortunately I didn't – had to unplug the midi out cable as it was playing havoc with ableton during live gigs!
I'm using some software called 'Midi Monitor' for OSX which I've used for years, tends to be pretty reliable. I'm only using one midi channel each for the space and pitch factor (1 and 2 respectively), but this midi shrapnel is coming up on all channels, but it looks fairly random.
One thing that strikes me is that the default behaviour of the MFC is to send a PC on every midi channel when you switch patches. I'm wondering if these PCs are causing some overload or other issue with the eventides? I've turned off or reset all CC and PC mapping in the pedals just in case but it made no difference.
I'm using standard eventide power supplies and have tried different midi cables. Really weird!!