I wish you well with your 3-speed conversion of this bike & don't necessarily believe we need to kick you out of this subforum but...
It is the perfect example of why I'm sorry to say that I am very disappointed in this bike. As I mentioned earlier I am a long time Rivendell curious rider due to my long love affair with a B'stone roadie - even though mine may be the least GPish of the all bikes he offered through them - who was quite interested in how this model turned out after its interminable lead-up. I noticed quite awhile ago that besides its unattractive, to me, geo - they were steering this thing towards & mostly promoting it as a platform to build into a multi-gear bike. Now with your conversion I feel free to say, & hope you won't mind, that I actually kind of dislike what I see of it. But it is yours so you do you & enjoy it. Ride safe..