Kelsey-Hayes Hub to Rotor

My first car/love was a 64 Polara 500. I had the most difficult time taking the rear drums off whenever the axle key would deform from too many burnouts. The the top half of the key would be moved slightly in relation to the bottom half and not allow the drum to be removed. I used a puller, heat, and a BFH to get it to budge. I bought extra keys and replaced them as soon as I could see deformation which made the removal of the drum much easier.