question about brakes on the mamba max pro

[BrianG]

Out of all the MMPros I have used on different software versions, I've never had brake issues. If I max them out, the vehicles all but flip over forwards or lock the tires when I jam on the brakes. If I ease into them and/or lower the brake force in the ESC, the brakes work fine.

Sounds to me the ESC is not seeing the full brake signal. Set ESC brakes to 100%, set radio throttle trim to 0 (centered), and any EPA setting to 100% in both F and R directions. Then, recalibrate the ESC and radio.