I have an old Millers Falls No. 14 plane I picked up on eBay a few years back. I had bought a replacement Hock blade for it, but I'm just getting around to taking a closer look at the plane. The sole has 15-20 dents from what I'm guessing was a previous owner using it as a hammer. A straight edge shows that it's not very flat.
I could put it in a mill and flatten the sole pretty easily. I'd have to remove somewhere between 1/64" and 1/32" to flatten it. Is it worth doing? I'm wondering if even with a flat sole, the blade alignment could be out of whack. Other than the damage from being used as a hammer, it's in pretty good shape.