Automation dropouts/Houston Dying?

Weird problem that started up for no apparent reason. I’m using my old, trusty Houston midi faders to draw automation volume on audio parts (as I have for years) and I’ve started getting dropouts which I then have to go in and delete. Any ideas why? I’ve tried changing the automation reduction level %, but it doesn’t make a difference. I suspect it might be the Houston, but wondering if anyone else has had automation drops using outboard faders via midi?
http://i126.photobucket.com/albums/p113/swickpro/AutoDrop.jpg

Hi,

This doesn’t look like a dropout to me. The value (the lower one) has to be somehow transmited/received. I would recommend to track the MIDI data at the same time, and check which data are really transmited from the hardware. Then, we know, if it’s on the hardware or on the software side.