HUI-MIDI help

[tom tafuto]

I have a DA7 running in HUI mode and
whenever I try to record MIDI, my system hangs up due to MIDI overflow when in DAW mode.

I am using two midi interfaces as follows:

A Studio 3 is connected to all my MIDI gear (and both serial ports of a 9500/G3-500) and feeding one MIDI cable to a MOTO Express XT which connects to the 2 DA7s and back into the Studio 3 to provide 2-way communication with ProTools. This seems to work fine.

But whenever I record enable a MIDI track in ProTools, the meter on that track starts rising until it peaks and eventually hangs. I've experimented with event muting on the MOTU Express but I am not quite sure what events to mute.

I would certainly appreciate any help resolving this issue.
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