I was having issues that ended up being related to B-tension as well.
Even after having my LBS check my shifting and adjust the B-tension on an unweighted bike in the shop I would get out on the trail and the shifting wouldn't be great. At the recommendation of a riding buddy, he helped me adjust the B-tension while I was sitting on the bike and after that my shifting worked great again. (I'm sure that adjusting B-tension on a sagged bike is standard practice for many, but it wasn't for me until going through this experience)
Jan. 19, 2018, 9:05 a.m. - MTmtnBiker
I was having issues that ended up being related to B-tension as well. Even after having my LBS check my shifting and adjust the B-tension on an unweighted bike in the shop I would get out on the trail and the shifting wouldn't be great. At the recommendation of a riding buddy, he helped me adjust the B-tension while I was sitting on the bike and after that my shifting worked great again. (I'm sure that adjusting B-tension on a sagged bike is standard practice for many, but it wasn't for me until going through this experience)