Originally Posted by
CliffordK
I thought Campagnolo had eliminated the "b-screw" near the hanger. But, rather relied solely on the screw near the cage. Perhaps they brought the old hanger adjustment back.
https://www.campagnolo.com/media/fil...ev02_07_16.pdf
See page #5. Diagram #10. Screw marked "H". That is the screw used to adjust the distance between the cage and the sprockets.
Wrong technical manual for the rear derailleur the OP has. Here's the correct one:
Rear derailleur - mechanical units The "B-screw" is L in figure 10, and the H screw is shown if figure 12. Adjust the H screw to get 5-7mm clearance on the smallest sprocket, if you can't get the clearance adjust the L screw, then readjust the H screw. Another thing to check is that the cable is anchored correctly, as shown in figure 8. I've seen the cable anchored on the wrong side and that can create some weird shift issues as it alters the cable pull ratio. Your rear housing looks a little short, you want the housing to enter straight into the adjusting barrel.
Has the cassette been off recently? Chorus 11 uses grouped sprockets for the larger groups but loose for the smalls. If the cassette was off and the lockring wasn't properly torqued when reinstalled the loose sprockets can move and create shift issues that only affect the smaller sprockets.