Anyone ever have claims for damage with UPS?

I recently shipped some Martin Logan Aerius in their original boxes via UPS and they cracked both of the side rails on both speakers! There is some dispute whether the box and packing material meets their guidelines. They were insured, taped in four different spots with strapping tape, but the just got abused buy them. Any hints on how to deal with them? It's not over yet, but I am not hopeful.