I am a member of CyberScribes, but I'm a bit scared to post to it. I'm not sure why - I think maybe because I don't even know who's in the group, or how many people my sad little n00b email is going out to. Flourish feels ... friendlier? I don't know...
Mr Tresser definitely seems to know everything there is to know about gold, but I think he generally recommends his own sizing? I'd hesitate to ask him about how to use someone else's product, anyway, I feel it would be a little rude. Like going over to Brian Smith and asking him to adjust my Weidmann penholder ... you'd certainly get answers, but you'd leave people wondering whether you had any manners at all!