The day after my bike purchase I went back to the Phone Doctor to get some adjustments done and Michail, my new Russian bike dealer helped me out in a most professional and nice manner. I good store in my opinion.
It might lie a bit off the beaten path for you Brooklyn dwellers but I must recommend it for anyone here on the upper side. on 143rd street and 6th Avenue. Some really nice Russian guys and the sell cell phones and computers also...