Dave,

What kind of flash is it: Rapid, slow, double, or single flash? The main one I run into is the slow. What is the gain on the transmitter? I find that most of the time it won't arm right in standard rate. The transmitter has to be in HH mode before you plug the battery in. I need a gain of 73 on the DX7 to put it into HH mode. Then if you want to go to standard rate you can do it after you plug the battery in. The other one I run into is the rapid flash. To fix that I go from HH mode to standard rate 3 times in 3 seconds.

Nick