...the brothers at the GB are imperfect and make mistakes, this is no problem for me, but their writings is also flawed, and this is a problem, because they claim to be guided by Gods spirit.
Additionally the writing of the GB is taken by witnesses as coming from God, so it has a tremdous impact in their life. Granted a lot of advice is given in a rather foggy way, pretending to leave matters up to the conscience of the brothers, but others are even disefellowshipping offences (blood for example).
You nailed it. "Spirit-directed" and "inspired" mean basically the same thing, except in Dubbie language. There, it means "accept it as God's Word until we change it, then it was just imperfect mens' word."
I talked to my non-JW father early on. If you want some aid to see if you are thinking straight, you really need a neutral party. JW's tend to want to turn you in. We here can help ya, but people like Reniaa will say we just want to drag you out. While we just want to help you see "the real truth" I can see how a JW would say we are biased, but so are they. But hey, if you have confidence in a good friend, you can take a chance on them. But it sets off alarms. Even if they managed not to turn you in, you may lose their friendship.