I have a modified 580EX (not a II). It's the Flash Zebra mod which allows me to use a 1/8" mono cable from the pocket wizard to the flash. Before I had the FlexTT5 I had a Plus II. I'm assuming ETTL won't work via this connection with the Flex. I ask because I'm having problems mounting my 580 on the Flex with my softbox and it would be easier to use the cable.

