Hi all I’ve had to replace my transfer case input seal 3 times in the last 2 months!!! Deal tells me shaft is all good with no burrs and also tried to tell me that “it must be a faulty part from the manufacture” 3 TIMES????? I highly doubt that. Can anyone give me any kind of insight of what might be causing this seal to go??? I do not feel any vibrations while driving. I am at a loss here any thoughts????