I need some help with the Pocket Wizard Mini TT1 and Flex TT5. I have the TT1 on my 5D MK II's hot shoe and a 580EX on the TT5, i also have a 430EX i wish to fire at the same time using the 580EX to trigger it. I have the 580EX in switch on master mode and the 430EX on Slave mode but when i take a shot the pocket wizards just flash red lights once and the flashes do not go off. So basically my setup is: Camera + TT1 >triggers> TT5 + 580EX in master mode >trying to trigger> 430EX in slave mode I believe it is possible, as said on PW site. Wireless transmitters and receivers - Pocketwizard Any help is appreciated! Thanks.