Not literally two or more sections but multiple passes with the screened resistive ink overlaid. It is difficult to realize the ideal taper for popular mic preamp topology. You want good resolution/adjustability down at the low ohms range, while delivering tens of kOhms at the high ohms end (for decent headroom and higher signal handling at low gain). This was accomplished by using inks with different resistances to screen on the low ohms and and high ohms end.Most affordable (read cheap) pots are two-section, so the log law has a sharp corner at mid rotation.
AFAIK, no commonly available pot have more than two sections. An exception is S-law, that has two kinks, each close to one or the other end.
I believe the gain pot that JR had custom-built might have more than two sections.
High-quality faders are a different story; the track has multiple taps fed via branches that are laser-trimmed. As a result, their output impedance is not varying in a monotonous way, it jumps up and down.
I begun by chopsticking every connection and component in the amp, methodically, to try and excite the fault. No luck.check for bad solder connections