I've got a similar problem on 65 plate RSQ3. Problem started after new tyres fitted all round (Pirelli P Zero) and tracked. Had wheels balanced a second time by tyre supplier plus balanced by dealer but problem remained. Have also rotated back to front but no change. Dealer concluded buckled rims and quoted £1000/rim! Seems strange that new tyres plus tracking should suddenly cause vibration. Had wondered if front dampers were worn and causing vibration. Also, considering getting rimsgoing checked/straightened. Also trying to find a tyre fitter with more accurate/high speed balancing rig.