1 ton Rear Leaf Spring Replacement, hidden nut on front bolt ?

[truckin 79]

I took a 8 leaf spring from a junk yard truck and I fought this for a hour. I was lucky because truck bed was off and it was still a you know what. I actually got bolts off but rubber bushing kept leaf spring stuck on. I finally just took cordless cut off wheel to brackets. I have a broken leaf on my truck and after fighting j-yard shackle I am just going to replace broken leaf and forget about replacing entire pack. If I had to replace entire leaf pack I would honestly pay someone, good luck