> What is the
> maximum diameter knob that is recommended for the P3 kit?
>
> I wasn't sure how far apart the pot shafts are located.
The knob spacing is 0.75", or 19.05mm depending on whether you use nice
friendly imperial, or awkward metric measurements ;-)
Mounting holes are 7.5mm. I specify and use 16mm Alpha pots.
Cheers,
Colin f