Dave Winfield's WW1 armored car 1/12

[airdave]

You can adjust the side to side height by curving the springs more.

I also notice that the rear transverse spring is slightly beyond the rear cross member.
Curving the axle springs a bit more will bring it forward so it aligns better with the cross member.

A difficult thing to do at this point, I know...but once the transverse spring is glued into place, it helps the axle springs keep their shape and position.

Once you get the springs into the proper arch, I recommend soaking them in glue (CA, PVA, whatever)
to stiffen and strengthen them.