Originally Posted by
Kinetixx
Thanks folks, I'll try them a bit later this afternoon
I don't think you have to start from ground zero nor do you need to mess with the limit screws. Once set, a limit screw almost never needs adjustment. If the bike was shifting properly in the past, then your problem is just cable stretch. Shift to the lowest gear and check the cable tautness. If the cable is slack, adjust using the barrel adjusters.
Most all shifting issues can be solved by adjusting the cable alone.