The adjustment knob on the lower left of my 302 came loose today. It
was still attached to the metal rod that goes into the instrument and
it appears that a set-screw came loose from the far end of the rod.
Has anyone had this same failure?

Does you know if I can easily repair this or does it require breaking
some quality / calibration seal to get inside the case? I don't want
to take my panel apart thinking I can fix it before I fly Monday, if I
really should plan on sending it back.