It is a small world. I do work for Nelson and had fun working on the P-38. Howard's passing was very sad. I worked on him aircraft for 20 plus years. I was glad I was on vacation. As for the rivet question. When you use flush rivets to rivet a part together you either have to dimple or countersink the metal so the rivet is flush. The metal thickness dictates whether to dimple or countersink. You can look up flush riveting on Youtube or look up sheetmetal books on ebay to get a list of good sheet metal reference material. Make sure you check prices though bookfinder etc. People tend to sell books for more then you can buy them new somewhere else. If I can be of anymore help let me know.
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Randy
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