Audio taper (logarithmic) and linear pots are available.
I recently replaced the pots in my RG-470 and I put both linear pots. Usually, a logarithmic pot is used in the volume.
Want to know something? I LOVE IT!!!

I might replace all my
volume pots for linear pots now.
For Air Norton/Tone Zone, try 500kOhm pots. I have that setup on my J-Custom and it is the most adequate.