Some time ago, there was a lengthy discussion on fitting new style wingtips to '67 F model Mooneys that sports the twisted wing - or rather the fact that it was not possible. I insisted that it was indeed possible and I was wrong. A very clever greybeard at our local Mooney agent, that is a sheet metal expert and does magic with rebuilding just about any wreck, explained and actually physically demonstrated to me why the wingtip could not work. It does not have anything to do with altering the