I bought a used Rover that hasn't been used or a few years. Identical to the model I used to have before I upgraded -- 8-speed handle-mounted rotary shifter. The cable was disconnected from the hub but I have reattached and it looks like it is adjusted correctly at the hub from instruction I have seen online. However, the shifter handle doesn't go below 2nd gear -- t Seems to shift only 6 or 7 gears. Won't go past 2nd gear when downshifting. First time I've worked o9n a shifter, so I may be doing something wrong. Any ideas?