Hi Jim , the same rivet callout shows a different icon for the upper two T-1011 attach rivets, but does not have a rivet callout for that icon. I would assume that they are still AN426AD3-3.5 as the have the same materials to hold together.
It's fun figureing out the plan shortfalls, you end up spending most of your time determining if it you miss understand their intentions or if the plans are wrong. If Van's spent two hrs revising things it would save us all a lot of time. I would thing Van's would like for us to move along swiftly and build more kits, I can't figure them out. Just because they have the best plans in the industry , I see no reason not to improve them, if it can be done so easily.
Ron