If you have the newest Leo, here is the quick fix solution, program the DMD units the easy way:

Put the tank on the floor in a clear area.

Take the 2 controllers and receiver completely out of the tank.

Layout the antenna straight.

Make sure the transmitter and receiver have a clear sight of each other.

Turn on the Attack Radio with fresh batteries.

Turn on the DMD units with a full charge battery.

Try all the functions, do not let the tank run away!!!

If that does not work:

Post your question here:
http://www.rcuniverse.com/forum/forumid_369/tt.htm

I or others can take you through the setup steps.

Also revisit the kit instructions and the rc manual so you are familiar with the various steps.

And answer the previous posted questions.