Originally Posted by
SoSmellyAir
I also have this problem on my old Cannondale Synapse, which has FSA rings on Cannondale SI spider and cranks with a BB30A bottom bracket. Shifting improved slightly with 105 rings but L-trim still does nothing.
Interesting data point... To answer
Kontact The crank is a Shimano FC-RX810-2 crankset. However, I have changed the rings from 48/31 to 46/30 from the 600 series crank for better lower gearing. I don't think that this is the issue.