July 1999 Engineering Notices
Reference plans number 416 and below, Drawing #16. As shown in the drawing below change the 5 1/2" dimension to 5 3/4" to increase clearance between door frame and bottom of the wing in the open position. If the fuselage is already welded up, adjust hinge location for needed clearance.
Reference plans number 395 and below, Drawings #9 and #10. The 3/32" stainless steel pull rivets holding the nose skins to the nose ribs have been changed to 1/8" aluminum pull rivets. The cost and availability of 3/32" S.S. rivets has become a problem. If you have already assembled the ailerons and flaps with the S.S. you can leave them in, they do a good job.