Does anyone know a store/person who can do reliable and fairy affordable bike fittings?

Thanks a lot!

There are FIVE opportunities for single supplements (no sharing) for July 4th weekend.  The cost is an additional $100. and there are five spots, first-come, first-served.  Rooms are going fast, so don't delay!  Also, if you haven't signed up for West Point yet, there are still a few double rooms available.  Please don't wait till the last moment.  There is much to do as far as ride planning, etc.

I had a major tune up for my 'errand' bike and when I picked it up the shifter was slipping between gears. This didn't happen before I brought it in. Could the shifter been messed up during the tune up? 

I had my 'errand bike' fully tuned and when I got it back the shifter wasn't shifting correctly. It slid from higher to lower, skipping in betweens... It wasn't like that before I brought it in. Could the bike store inadvertantly mess this up in the cleaning/tuning of the bike, or is it more likely that I just need a new shifter?

I'm in the early stages of organizing a group ride to take place in Cambridge, MA, in June 2015.  We'll probably start with a tour of Cambridge and then continue on to a nearby area such as Medford or Stoneham.

Please tell me if there's a club in Boston like NYCC, with a library of rides and lots of friendly people to answer questions and make suggestions.  (To supplement whatever I can find on RWGPS, etc.)

Bonus points for a Cambridge bike shop with a large supply of rental bikes.  Thanks!

  The closed section after the Croton bridge crossing is now open. Well, partly open with a fence still closing half the width so that it's single file for a short stretch. This is more of a big deal for walkers/runners who must have liked the detour less than cyclists.