Guys, the first batch of DNX408t truggy tanks had the same tank breakage issues. I used a longer screw and slid some fuel tubing over it. I'd only tighten the screws snug to let the fuel tubing allow the tank to flex with the chassis and absorb hard hits. I also used an extra o-ring under the tank tab insert for cushioning. I did this on the front and back. I never broke a tank when I ran the truck all last year.

TD eventually added more plastic material around the mounting tabs to beef them up a bit.

Something like this could possibly work with the NB48 tank.