[markmokris]

Thanks for the suggestions.

I did do some careful measuring on both pots. I think both the vintage pot and the new pot are audio taper. However the slope of the first 50% is steeper one control the the other. I think this accounts for the difference I am experiencing.

I ran into a similar situation on an Airline tombstone a while back. I replaced the vintage control with one of the more modern ones. Same problem. The audio seemed to get too loud to quickly.

Either the pots I am buying in EBay are strange, or maybe modern audio taper pots are just different?

Mark