Hi Jerryjerry. Your guess is just about right. My " EXPERT " local man decided to see what's on there. Yes, he so unfortunarely pulled the scew out and then pushed the gear-shifter down. I managed to lift the shifter. The shifter can now be pushed right in and lifted right up. However, drive-shaft and prop-shaft are still locked. Just do not want to "fool around" too much in case I damage the unit. The problem is, that the book just does not show you properly how to reconnect the internal unit to the gear-shifter. Will try to pull the bearing cage hopefully and then see what's what.