That’s what I did, and I’m still 2” from getting the holes to line up.You should have a fixed end and a shackle end on the spring. If memory serves (and physics verifies) the shackle end should be in back. So, bolt the front of the spring in, then the back, than the axle. If I read your post correctly, you can get the shackle far enough forward to reach the spring?
In that case, bolt the axle to the spring and lower the vehicle down to help compress the spring. Might be a bit finicky to get the bolt holes to line up, but that is the safest way to do it, in my mind.
I’m thinking I need to remove a leaf.