Futaba 3PM Brake Adjustment Help Please!

[Urgeoner]

Hello. I recently got a Futaba 3pm 2.4GhZ Radio It is a bit complex...it's nice I like it a lot.
The only thing is when I apply brake power to my truck, it locks up the wheels instantly, there is no slow down, just either no brake or all the way brake.
Is there any way to adjust it so that I can dial in the brake power without instantly completely braking? It's hard on my tranny and makes negotiating the track hard to do.
Thanks for any help!