I have a Shimano 105 triple set-up on a steel road bike.
It is 5 years old with about a total of 8000 miles.
Recently I cannot seem to be able to set it up right.
When I get a sweet change going up the gears it is tardy coming down. I then adjust to get going down right then the tardiness changes to going up.
I replace my change regularily and recently fitted a new Shimano Ultegra rear derailleur and a new Shimano middle chain ring as I use the middle ring 80% of the time.
This did not cure the problem.
Where do I go from here . Replace the cassette? It has 8000 miles on it (the same as the rest of the parts).
Replace the changers ? - (very expensive).
All suggestions gratefully received (please dont say change to Campag)