Lately, I've been noticing a metallic noise somewhere beneath me when really mashing the pedals (particularly when standing). It's not loud, but it reminded me of a BB creak I had when the BB wasn't on quite tight enough.
Anyway, cleat bolts are tight, BB was tight, but I did manage to reduce the noise significantly by tightening two of the chainring bolts just a bit. However, I can still hear a little bit of something, and I double checked to make sure the chain isn't touching the derailleur or anything like that. This is not really loud -- I can't hear it if traffic is around me or even if I'm riding into wind, so I'm wondering if this may be normal noise between the chain and the rings that I just hadn't been paying attention to before. My guess is that only the most fastidious bike riders would notice anything.
Any idea as to what this is? On a vaguely related note, I didn't use a torque wrench when I put on the dust cap on the right side crank FSA Gossamer). Since this cap influences how tight the crank is in, I was wondering what problems would result if I put it on slightly too loose or too tight. Thanks.