Hi. Out of desperation, I recently had to replace my 11 speed DI2 Dura Ace inner derailleur cage, and due to lack of parts in SA as I believe Shimano no longer supports 11 speed, I had an oversized pulley cage retrofitted.
It looks very nice, I must say and there's no problem with shifting, however I noticed a distinct difficulty in climbing. (I ran out of gears), which wasn't previously a problem.
I'd like to know if a larger pulley wheel would have an effect on gear ratio, and if so is there a fix for this? Do I now need to replace my cassette and chain as well?
Thanks in advance.