shackle angle again

Is there any chance that the front mounts are on upside down? That would pull the springs forward.
From the factory, the mounts should not shove the spring-eye up high into the box.

That angle actually looks pretty close at this point in time.
Since you are dinking around back there, anyway, consider moving the front mount back as far as it will go,on the factory studs;So you can run 28s. You get to solve two problems at the same time.I think I was able to put a 3/8 steel shim in there.Some have only been able to get 1/4 inch in there