Hey everyone, Just got my bike back after replacing the chain. The speedo doesnt work properly now. It just fluctuates wildly whenever im on the move. Maybe a sensor wasnt hooked back properly after fitting the chain? Also i was a bit tight for funds so i didnt have the sprockets changed at the same time. Should i do that at a later date when the funds come about or just grin and bear the increased wear that the chain will be on.