e-revo weakness diff

[e-mike]

so ive been running one of my e-revo for about a month and i blow up 4 rear diff and one front.....w.t.fthey are suposed to be stronger than before????my spur is not to thigh,,,

my set-up is

mmmv3,6 cell lipo 1515 1,5y geared for 35mph(18/65)and big joe tire...<(could it be my issue)

timing lowest,punch control 100%

and i also broke 12 shaft

its winter here...i was thinking that running in winter was better and smoother for the drivetrain,,,i was wrong

forget to say that ive never broke any diff in both(3)of my truck last summer....why i dont know?