I know what you mean. Fortunately, with the diff locked together, it takes most of that 'pushing-out' force away. The bevel gears are not trying to push themselves away from the spider gears.
I tore into mine last night-- it wasn't the differential gears. It seems I never upgraded the counter gears' bushings-- they were worn to heeel and thus allowed the smaller intermediate gear to eat itself & diff gear.
Luckily I had a bunch of Wild One / Fast Attack gears in the parts bin. These gears are a little 'taller' (48 teeth vs. 47 on the Blackfoot diff gear), but that's ok-- I can use a little more top speed--
The new set is epoxied together & ready for install.