I'm a newb :aureola: so be easy and don't rip me a new one if the solution is something simple. Got my 1st road bike (K2 mod 6.0) the crankset is a FSA S-LK. So i bring it home from the LBS and within a few days of riding, nothing serious, just the left side crank arm is noticeably loose :mad2: . So i tighten it, not too tight as I don't have a torque wrench yet and don't want to mess anything up but I'm sure it was tight enough and I got out for a few miles and its loose again. Any pointers at all as to what i should do?