That's a good reason. Glad I asked (for future reference).
Gary Davis had this to say:
>My experience with the knobs from Moss was that the holes for the
>spring-loaded pin were incorrectly sized and positioned so that the pin
>would not engage the knob. I drilled the holes out to make them a little
>larger to allow the pins to slip in, but all that did was cause the pin to
>tear through the plastic of the knob and not effect the heater control. I
>gave up on them and that's why I'm looking for originals.
>>>> Max Heim <email@example.com> 04/20 12:27 pm >>>
>BTW I see the heater control knob for the '70 is also listed in Moss,
>#233-975, but perhaps they are currently out of stock, or did you prefer
>used for some reason?
'66 MGB GHN3L76149
looks particularly bad since some SUV clown backed into it.
If you're near Mountain View, CA,
it's the red one with the silver bootlid.