HI, just had first ride on 3 month old 1200gs.Abit different from what i am used to( jap multis) ,but i can now see the attraction of these machines.The bikes done 4k. Should the shaft drive be super smooth? It feels like it has worn chain and sprockets, vibes through footpegs, when the throttle is closed and slowing down.- should the engine pop and bang( backfire) on a closed throttle as well?