So I should be right then as long as the lines are right on the ribs and they are level. I will be following EF's advice on the trailing edge of the ribs and sending them to follow the rib shape to a point. If anyone has something else let me know. Thanks for all the help. hard to believe I have been building as long as I have. this is just a very old kit with very little in the way of direction, and I don't want to ruin it as it is one of my favorite planes. My uncle build this kit back in the 70's but I didn't get to watch that build much and have forgotten to much.