Viscous fan package?

Bob, I am trying to put all the bolts in my Hayden 2947 fan clutch. It is more difficult than I even imagined. I had one bolt in for mock up before. I am trying your stud method now & that is even hard. Any other tips?
I use bolts on mine. It helps to just get the bolts started first - like a thread or two on each. That'll allow you to pull the clutch out in order to fish them all in. Then use an open end wrench and snug them all down one flat a time. It's a shitty process, but it can be done.