A word about cranks:
Check the fitting of your cranks, people. I just replaced the stock 170mm cranks with 165mm ones, and the crank bolts on the driveside were loose. I was able to extract the crank itself with very little resistance. After installing my new cranks, the forward chainline shifted inboard by 2 mm, confirming that the original crank had not been re-torqued after initial installation at the factory, thus preventing the crank from seating all the way up against the bottom bracket spindle. Interesting to note, the 165mm crankset I purchased from Brev.M is the exact same model as the stock crank (Lasco C14 stamped on the back of the arm), only difference being the Brev.M rebrand has a nice polished finish.
