Similar to Pistoff, I believe that JWs have one belief - the GB is god's spokesmen and all JWs must unquestionably follow as the GB dictates.
How else could any JW justify changing long held beliefs views (aka true understanding - aka TRUTH) due a "new understanding" (aka New Light) as uttered only from those claiming to be the GB although the new light is not supported by the bible and maybe soon changed again and their position cannot be verified?
Although the GB are often referred as the "slave", how many "slaves" are actually in a position of leadership?
Unless specifically made clear by the "Master", a slave that claims prominence is most often only due to claims made by that slave in his desire for prominence and have little to do with reality.