After all of the above except the hammer refused to work I disassembled the carb (an Edelbrock)) and fired up the gas grill on low (about 350 degres). Fifteen minutes later I used ATF on the shaft and it freed up. Gloves are highly recommended.
Ron

In sixty-five I was seventeen and running up one-o-one I don't know where I'm running now, I'm just running on Jackson Browne-Running On Empty