I finished the Dzus tabs and primed them so now they are ready to install. I used Rex's suggestion about using countersunk (flathead) rivets for mounting the springs and countersinking the back of the panel for rivets; they are put in "backwards" from what would be considered normal. It worked out just fine- no interference from the pulled rivet bulbs.
I scoured the internet and found not even one procedure for mounting self-ejecting Dzus fasteners to mounting tabs. This forum is a wealth of information. Thanks, Rex.
BTW, eagle-eyed viewers may spy the center punch marks on the tabs; it is to identify which one goes where.
Regards, Neil Tucson, AZ