Did you try searching the forum?
I don't recall a lot of "chatter" around this issue, but you might find something.
I personally had better luck with progesterone than pregnenolone a few years ago.
Sorry I couldn't be of more help.
By the way ... the search function for Curezone completely sucks. I usually use plain old Google, but limit it to Curezone by doing the following:
pregnenolone site:http://curezone.com/forums