LMK if there is any knife edge coupling. I did the review on the original [link=http://www.rcuniverse.com/magazine/article_display.cfm?article_id=107]smaller venus[/link] here on rcu magazine and one thing that amazed me was that there was close to zero coupling in knife edge. I could fly that plane around the field in knife edge almost the entire flight. I might also have to pick up one of these planes. I have a couple engines that would find a nice home in it.