Hi Guest!
Hey - did you know if you click on the title of a thread it will take you to the first unread post since you last visited that thread?
but were afraid to ask: 
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Pretty Please - add it to our Events forum(s) and add to the calendar! >> 
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To the original question - and I think you are on the right direction with Eaton Detroit Springs webpage, here is a post I made elsewhere on whether to hammer the clips:
https://www.britishcarforum.com/bcf/showthread.php?100314-Moss-rear-leaf-springs&highlight=leaf
https://www.eatondetroitspring.com/leafspringclipsiii/
"In fact the correct name of them is "rebound clips" A spring does not break when it is being compressed, it breaks on rebound. When a spring is being compressed each leaf is provided support by both the leaf below it and the leaf above it. When a spring is in rebound the leaves would separate and have any support unless there are clips holding them as a pack.
A correctly designed spring would have between 30 and 50% of the leaves between the clips. The longer the spring, the more clips. Typically the 1st 2 or 3 leaves are held together by one clip then further out 4, 5 or 6 leaves are held together with another clip. Many springs will have 2 clips to the front and 2 to 3 clips to the rear. But the number of clips, the number of leaves held by the clips are determined by the size of and the length of the spring.
As for tightness, the clips needs to be loose enough for the leaves to flex and move length wise. Too tight and the leaves would become bound and break. – Mike"