Indexed triple chainrings
I frequently have problems getting the indexing right when setting up front mechs, triple chainrings and indexed shifters. often ending up with a shifter that's too hard to push in order to get the mech up onto the largest ring (ie too much tension on cable), and when backing the tension off a bit, can't get the mech to move far enough in order to ride up onto the biggest chainring. It drives me fckn nuts. I dunno if this is to do with parts, it seems to hapen with low-end Sram grip-shifters, some Rapid Rise shifters and others, never in a consistent 'oh, those shifters are arse' fashion, just randomly...