my right shimano 105 5800 shifter was having trouble engaging the 11 cog in the back. I diagnosed it today, and found the cable frayed inside, but not until after i drenched the internals with wd40 to clear the gunk out. now that the frayed cable is out and the new cable is in, I'm noticing that there's more drag in the shifter. Is this because I washed away the factory grease that was in there, or maybe the cable i'm using now isn't as smooth as the old one that was in there? there does not seem to be any extra resistance going into the cable housings, so I think it's coming from the shifter.

what do you think?