In the past, I've talked to my friends about how it appears the WTS unapologetically and inexplicably changes doctrines and definitions.
A couple of weeks ago, and thanks to another poster, I was able to show an article from 1942 where the WTS declared that the shepherds and dukes were the annointed and Jesus. That week, the presentation was on the shepherds and dukes being the elders. Yesterday, I wondered out loud how it must feel to be trapped on unstable ground with the WTS. In churches, I explained, core doctrines change very rarely. If you don't agree with the core doctrine, you switch to a church that more closely aligns with your own "new light."
I got the "but we're the only ones who preach" argument which I countered with the Pentacostal growth.
I guess you have to be careful about spitting contests. There's a war to be won.