Originally Posted by
Iride01
If your chain is too long, you can't expect the b-screw adjustment to do anything. Get the chain length correct first.
Can we be sure of that? If I remove 1 more pair of links, it will not be 90 degrees, but maybe 2-3 degrees on the "right side", which will also mean that "big - big" position will stretch the derailleur around maximum. I shall not be able to go back, because chain links can not be added back...