About a month ago I posted here about my clicking shimano 105 bottom bracket....well, the bb's been replaced and the noise has returned. (And it is NOT my seatpost). I have only about 500-600 miles on the bike. Here's the deal:

With every left pedal stroke, I'm getting two clicks through the bottom of the stroke, the first occurs at the point where the crank arm is being stressed the most, the second occurs when I'm just about to begin the upstroke, when the pressure is relieved. It is only heard when I'm applying a decent amount of pressure (accelerating and climbing). The noise started out happening only once in a while, but before long, was there with every stroke, and now I can make it happen on demand by pedaling medium-hard. I had my 105 bb removed & greased (it was dry), which took care of the noise for about 30 miles, then it returned. Same thing: regreased bb, noise gone for 30 miles. Bike shop assumes it's the bottom bracket, replaces with an ultegra bb - noise gone...for 30-50 miles. Regrease new bb, noise gone for 30 miles.

At this point, my bike shop is getting sick of dealing with it and is basically hinting that I just dropped well over a $1000 on a lemon and they're not going to do much else but send the bike to Felt and have them troubleshoot (makes no sense, as the problem seems to be with shimano's components), but I may just be stuck with a noisy bike and that's that.

I really think that the noise is coming from the crank itself, at the interface with the left crank arm; this is what I told the bike shop on my first trip in over a month ago, and it's what I told them again today. They still seem to be uninterested in checking that out as a source of the noise, I suspect just because they're lazy sonso*****es and don't want to deal with a warranty issue. Does anyone here have any other ideas on what this could be? Should I just off the bike on craigslist and take a severe loss? I'm pretty distraught over the matter, being that I can't afford any more time off my bike! PLEASE HELP!!!!!!