That's such thoughtful info and I'll try to follow it - thank you. I'm a little familiar with aircraft riveting and understand some of what you say. I orders some 3/32" x 5/32" steel rivets from eBay last night and will wait till they arrive and try to go from there. I' not sure where to come with a the correct mandrel at this point but will try to find one. I have a few connections at the local airport.
Thank you again...I'll get back soon as I find out more to work with.

Dick