Re-arching leaf springs

["Eugene D Abbondelo" <eabb@loc.gov>]

Listmembers:

Since I have to renew the rubber bushings in the "eyes" of the leaf
springs on my Singer Roadster, I thought I would have the springs
"re-Arched" in the rear to remedy the sagging.  The leaves in the rear
are underslung, with the axle being above the leaf spring.

Has anyone had this procedure done, and if so, were they happy with the
results?  Any special instructions to the shop doing it? 

Thanks,

Gene