Shifting issues...head banging.....!
hi guys , advice please... Been in the trade for 20+ years and this has me stumped... Tiagra 10sp shifters. 4600 , on a spez secteur ( not that that matters but hay). new hanger , new outter cables. slick inner cable. new rear mech. ( tiagra 4700) and it just wont shift right. smooth as silk cable action but not lining up with the cogs. ever good going up the gears but crap and out of line coming down, or good coming down the gears but crap going up... other that changing the shifter its a new group set.. any advise will be good. (frame is all true by the way). many thanks.