Just changed the tyres on the bike whent to refit the back and droped the sindel. Basicaly what spacer goes where on the rear wheal? Larger but shorter on on the sprocket, smaller but loger one on the disk brake side?. The manual has this the other way round and to confuse me more the last owner had the spinde with the nut on the sproket side which I am told is wrong. Please can some enlighten me!!!