Phase 90 script logo from ggg vol pot

[gtangas]

Hi guys

I've posted this question on the mods section but perhaps this is more a tech help post...

I want to add a volume pot to the phase 90 scrip logo ed from GGG

I see from the schematic two resistors near the out. A 150k > a 10k > and the output pad

Can I swap one of this resistor by a pot?

The goal is to control the volume gain that I'm getting...