Embarrassing HP65 question

[TASP]

LOL, what am I doing wrong ?

When I put the program card above the top row of keys, I have to use a sharp implement to get it out. Is there something I'm missing?

Doesn't seem to be dirty, not sure adjusting torque on the screws would make any difference, do I have some nonstandard program cards that are too thick ?

{damn, I'm just dying posting this, be gentle}