Never, never, never, rebuild a gyro instrument that your life depends
upon... Always replace with new...

If the GS head is your only one, then it has to be new... If you have a
backup, then overhaul is OK - in your case it is not capable of an OH and
you don't have a backup GS, so moot point...
On the airspeed, I personally would replace it with new, but since a non
functioning airspeed won't kill you, overhaul is an option...

denny

"MRQB" wrote in message
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