I've just bought a GS-911 in order to help with managing an extra set of wheels that I've got.
I have one set with offroad tyres and one set with road tyres.
I've tried to activate the RDC units in the spare set of wheels by using the deflation trick but the GS911 can't pick them up. It sticks in learning mode.
I wondered though why I can't just stick the bike on the main stand and get the rear wheel spinning by using the engine, won't that wake the sensor up in at least the rear wheel to get that one lodged....