My 1-ton has 1952-style brakes. I am tearing down the rear brakes to replace the shoes and new wheel cylinders, etc. I cannot get the big pin to budge - its the pin in the bottom center that holds the two shoes together. Everything was rusted together, I had to break the retainer washer clip in pieces to get it out but that big pin is rusted together with the shoes. I beat on it and used half a can of PB Blaster. You can't hardly get anything in between the backing plate and the back of the pin. I thought about grinding the head off the pin but you cannot order new ones. Any ideas? I don't have big torches, all I have is a small BurnsoMatic. Is that enough to do the trick?

1953 GMC 1-Ton Pickup with 350 and 700R4