how about some thumb control?
what tires are you using thats what typically breaks axels.
Big tires and or holding the gas to the bars in soup spinning and then hooking up.
ill tell you right now you can still break axels if you drive like that. but more likely it will go down the line next you will break drive line parts and when you beef that up you end up breaking internal gears.
thumb control is key to axel life.
keep braking axles whats the best up grade?