He mentioned he had misplaced the paper they sent with the pickup explaining what parts to replace when he installed the new pickup. View the original note from Roland sent to Jonathan Prince. But Mark Wire was able to find a replacement hex divided pickup! 413100 Mark goes on to outline the resistors that need to be changed for the new #610 pickup.
I also have to add this: I picked up some G-707 electronics pulled from a guitar some years ago, and I did find a G-707 circuit board wired to support the older, narrow pickup.In the case of the G-707 guitar, you need to check to following resistors: R23, R26, R29, R35 and R38.Also, vintage guitar synth guru Rich Hilleman has suggested that the through-neck design of the G-808 adds to the resonance of the guitar, making the G-808 less suitable as a synth controller.I have tested and played both guitars, and can not say that I was able to detect a difference.There are some ideas as to why the more expensive, classier G-808 never quite took off with the same following as the G-303.
Aside from the fact that Pat Metheny is not dragging a G-808 out every night, the G-808 guitar seems slightly neck heavy when compared to the G-303.The other vintage controllers, the G-202 and G-505, are well-built, fine guitars.But they cannot escape the feel of being really well made Fender copies, no matter how nice they are. The more expensive G-808 has through-neck construction and other nice features, like gold hardware.In addition, the standard 1/4” output jack solders directly to the PCB, rather than the ribbon connector.The first time I tried to repair a failed op-amp in a G-303, I realized that the pin-out documentation was wrong on the schematic.Mark lists the serial numbers of guitars that use the older style, #601 (or part number 22380601) divided pickups: G-202 before serial no. For the G-303, G-505 and G-808, each string needs two resistors changed, one effecting the synthesizer signal, and the other effecting the hex fuzz signal.