Every Tank that I have owned I have stripped everything out of the Hull except the Gearboxes and lined the Floor and the Sides of the Hull with "Velco",
I then glued "Velcro" patches to the base of the Speaker, the Smoker, the Mother Board and the Battery,
Now everything is secure and yet I can simply lift it out as and when I need to and I have a lot more space in the Hull especially with the Battery on its side attached to the inside wall of the Hull by its "Velcro" strip.