You are missing the factory block. It has the ear on it for the rubber bumper to hit when you get too much on it. Keeps the springs from breaking.
Yes I dont have the factory 4in blocks for a f350 and was not able to sorce then at the time so that is what I got, will get one that would do such when I get track bars at somepoint.
Most factory springs look like the one below. Thinner curved leaves on the top for a good ride, and thicker straighter leaf on the bottom for heavy loads. That is why the trucks ride higher in the back when unloaded. Leveling kits totally miss the design idea and sacrifice that for looks.
This truck was used as for what I think, running tar or something of the sort in a past life. In turn f super spring where put on the back to carry that weight around and think they bent the axle as well. This what I find searching on them and leads me to that conclusion of what springs I have on the rear.
https://beattiespring.com/products/ford-f-superduty-leaf-spring-rear-8-leaf
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This what the miss matched stacks looked like before I corrected them for a even ride height left and right, I used the 4in blocks over these 2in ones so the rear dose not sit lower than the front. It also had the u-bolt type of a f-super but those would had been more to get custom bolts made, so switched it back to a top plate since found that stuff a lot cheaper.
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