I'm using Trakpower 3600's.
What i've done is remove the 3mm of purple washers from under the post at the rear, and put them above the purple 'nipple'
at the front.
The battery bar then sits nice and tight between the negative and balance ports, which are slightly raised, which holds the Lipo nice and tight at the rear.
The front slides very slightly, but as mentioned before, won't move far with the servo one side and the undertray the other.
Just need to test my theory on some rough stuff now
