Repair hint worth Repeating
To All doing any sheet metal riveting.
I believe it was on this site that I first read about Clecos, but not sure as I haunt most all vintage restoration sites.
In any event, if you don't know about Clecos, a removable, reusable holder wherever you can put a rivet, look it up.
I have just completed replacing my inner skin using Celcos, and it would have been a devil without them. In fact, with them I was able to reuse at least 99% of original holes. After lining up the first two or three the rest are so easy it's fun.
I repeat this hint as I had accidentaly discovered them and EVERYONE should know about them.
If it's ok to mention, I got mine through Aircraft Spruce, very reasonable shipping and execellent service. Don't forget the Cleco pliers, not that expensive and you really need them too.