If its any help mate, Id drain the tank and carbs, put a litlle oil in the tank and slosh it about ( youll have to flush it next year) take the plugs out stick some 2 stroke oil down each barrel and turn the engine slowly with kick start to coat the iners, put the plugs back in, remove battery and cover the bike, also try and get bothe wheels off the ground and let some preassure out to save the rubber, next year youll need to clean out the oild from the tank, put battery back in, change the plugs and your should be away.... Thats what i would do, No doubt someone will have diffrent idea's oh yeah and change the G box oil and 2 stroke oil next year as well

Ops and try to stop moisture getting to her, a nice dry warm living room is always good