Philco 610 Volume Pot - Need Advice

[compucat]

The volume pot has gone bad in my beloved daily service 37-610. It is a 2 meg pot with a loudness tap and I am having trouble finding a replacement. I am wondering if there is any way the more common 1 meg pot could be made to work. Could I put a 1 meg resistor in series with a 1 meg pot and still have the proper level of volume control? Where can I find a 2 meg pot with or without a loudness tap? Evwry place I look online does not seem to have a 2 meg in an audio taper.