Another $45 and 3 hours later, my sons ECX has 3 new axle shafts and is going again.
I think I am into this one at least the purchase price again in parts. Some his fault, some not. So far we are 3 axle shafts, 2 drivelines, rear axle housing, miscellaneous bolts and nuts, multiple ball mounts, battery, etc.
it’s no different than a real crawler. Except I can’t actually sit in it.