I'm considering a servo buddy. Here is a short and shakey video of the servo on my bike after today's redux of cleaning and lubing the shaft that's under the spring.
The servo has movement, but the GS-911 still gives an error, and is unable to actuate the flap.
https://youtu.be/aEFRubd1PGw
GS911 is simply calling up the routine in the bike ECU firmware to operate the servo & the ECU is unable to fully open it so it would seem time to replace the servo or eliminate it
I can understand the thought of eliminating the servo & fooling the ECU that it is there & operating, we do the same on US F650GS singles with a fuel tank vent actuator which only takes a rather low cost resistor.
The ECU is reporting the servo position so I would expect more than a resistor would be needed to stop all fault codes, the Servo Buddy seems a little expensive & I would want to know far more than I can see online in terms of what you get for the $US70 price tag
The Servo Eliminator is a little more forthcoming on what is in the product
https://healtech.co.uk/shop/exhaust-servo-eliminator-ese/