There is a specialized, yet little-known, GERBER file converter/translator program that has a "PDF-2-GERBER" translator within it. There is a chance that the "Trial" version of this program just might be able to do what you are looking to have done. Here's a link for the webpage detailing this software program:
https://www.numericalinnovations.com/blogs/news/ace-translator-3000-includes-over-150-translators
I have used this vendors' GERBER file editor (FAB 3000) before and it is top-notch!!! This company's product line has all types of highly-specialized PCB post-processing and GERBER file manipulation programs, so they just might have something that will accomplish what you are looking to have done.
Other than the Peavey pot issue as -- TheJames -- has pointed out, to resolve your immediate problem would require going "back to the drawing board" and creating a new PCB layout from scratch. That's not difficult at all to do, but it would require someone's time and some very specific mechanical location information and other details in order to do that accurately. While I have "Reverse-Engineered" several PCB's for audio equipment (API mixing console), medical electronics (German-designed schematics and PCB's being manufactured here in the U.S.) and aerospace gear (1979-designed PCB's used in U.S. fighter jets being upgraded to new Surface-Mount PCB's), all of these projects required that I physically had all of these PCB's -- in my hands -- so I could extract all of the data that I needed in order for me to "Reverse-Engineer" them and that would require for you to ship your PCB halfway around the world to me!!! So.....check out the above link and see if that is the direction which will resolve your immediate problem. GOOD LUCK!!!
(PLEASE DON'T SHOOT ME!!! I'M ONLY THE MESSENGER!!!)
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