Xanthippe - The evangelical church played no part in my working out the cult was wrong. First I did research, then I spent a year or more trying to resolve my questions with letters to the branch and Brooklyn, then I got Dfd and began associating with the local Baptist church.
All you need to work out that things like blood, eschatology and the Great Crowd are in error is WT publications and a lot of time and effort.
After I joined here I discovered that Alan F. had reached the same conclusions about the parousia for exactly the same reasons.