I know B.
Some stay and some not. Frustrating a little but you try to help anyway in the hopes they stick around.
Dartonshooter24, HHA's came in many configurations over the years of their manufacture, I have and old one with one pin that comes down from the top in a narrow sideways oval housing. Could be yours IS an HHA, but you got to stick around if you want help. This stuff is'nt always cut-and-dry easy.