Joe, I have seen them on the "Help" isles of the Auto Zones or Advance Auto at times. I know you do not want to do this but a long time ago I filed the sides down smooth with a fine tooth file and it worked for a week or two until I could get some. Just a thought if anyhone ever gets in a "have to" situation. These should really be no problem to find from the responses above. Take care pal.
