Hi, I am having a bit of a fight with some rusted door knobs. The knobs appear to be rusted to the spindle inside of the door. I managed to remove some rusted screws (lots of drilling. . .), so there should be nothing preventing me from removing the door knob. Except a lot of rust I guess. I tried pouring some rust removal into the screw hole and whacking the hell out of it with a hammer. Little to no effect, despite 3 hours of fun. . . I am at a bit of a loss for the next step to remove the door knobs. Any ideas? [ The door knobs are so rusted that I don't mind if they get severly damaged, I'll throw them away anyway. ] Thanks.