[Phlogiston]

Well, sort of. Using that method, of the 3 I described, I cut the wire off of the end without a ferrule(which is the foil/ground side). Then grind a small area flat so that the drill won't wander and drill through the end - through the foil and paper - until I hit the above mentioned ferrule. Heat the solder blob on the remaining end and the wire will fall out. Tap the body or blow out the solder to leave the hole in the ferrule clean.

Insert the new cap in the cleaned-out hole so that one lead passes through the ferrule (end). Seal the open end with epoxy or Bondo and paint black.

BTW, here is a picture of a CAST replacement (not made as above but cast in the red mold). This is the "death-cap" replacement and is rated for Y2 or X2.

   

Yeah, my sanded resistor needs new sand, but, is otherwise OK.