Gearmotor problems

[cosworth34677]

The motors are stupid strong in the dozer, they push the thing like it dosent even feel its weight. The esc is a Hobbywing QUICRUN 1060 Brushed ESC Waterproof / Speed Control 60amp and the motors are Rf 370 motors 6-12v . And the gearmotor are 100 rpm high torque 90' worm gear. I dont know I just killed the last two arge , this what kills me I do everything like everyone else but my model f,s up. I'm tired of spending money on these things just to get a hour of play out of them, this hobby can't be like this