Mine spews everywhere.... keeps the rust down in that corner of the truck. Funny thing is the front solenoid is not that bad.
I did the extended breather lines a while back hoping to solve some of the issues since I just guessed that the diff being pressurized would force gear oil up the line. I figured extending them would get the gear oily vent out of the dusty underneath of the truck making it less susceptible to crustifying. I never cleaned the lines so I don't know if it helped... I guess i'll blow the lines clean tonight and see if it stays oil free.