Every time I have my bike serviced, the bike shop sets up the gears on a stand in their workshop. The gears change perfectly on the stand, but when the bike is on the road, the rear derailleur doesn't change smoothly, and some gears are jumped.
I've fiddled with this myself, but can't improve over the default setup. Is it possible, or does this mean the Shimano gearsets are worn/the springs worn out ont heon the rear derailleur?
