Hi Hope someone can help I ma using the ST-e3-rt Trigger with 430 ex iii-rt and a 600ex, when i firen the trigger the 430 fire around a secound after the 600. I have turned off all groups except those that i am using as someone had previously suggested. The issue is the same when i fire from the camera or by using the test button. I am fairly new to this system so appologies if this is somthing obvious. I have previously used the same set up with no issues. any help would be greatly appreciated
