Hi Terry - I studied 1991 and baptised 1992 - I did really careful research using both the Bible and the Live Forever Book. I challenged the teachings where I had to. Elders sometimes sat in on my study.
The sister who took my study was surprised how much I knew about the Bible and would sometimes change her mind on WBTS teachings and say: "When you first said that, I didn't think you were right, now I've thought about it, I agree with you."
When elders showed up, I loved it and we went into great depth on many things. Little did I realise even then, that I was constantly catching them out. But I wasn't doing that, I was just talking and asking questions. However, it was when the elders turned up that I'd get told, "if the Society has anything wrong, they will change it. Unlike the churches we are not dogmatic." And I believed what they said. Why wouldn't I? They were kind and appeared genuine.
Fast forward to 2005/6 and I found out they had been lying. As you say:
What JW's had all along was double-talk, false reasoning, and a manufactured piety and skill.