repair a cast iron tub?
So this weekend, I scored big time at a local builder's supply auction...nabbed a brand new Kohler's Memoirs tub, sink and pedestal sink for $1000. They were not, however, boxed. Today when they were delivered, the tub had been damaged in transit. (I know, I know, it's a risk you take...but the guys delivering had done faultless jobs for me before, bringing in refrigerator, capital range, sinks, etc. for my kitchen remodel a few years ago).
Now the tub has about a 5" black mark right across the front. It's not deep, doesn't even feel recessed. But it also isn't coming off with rubbing. Is there any way to repair the damage? I'm feeling sick.