I am having some issues with the SLK front crankset.
Initially it was fine and quiet.
Recently is has been noisy.
When pushing hard while seated it makes a knocking sound, like marbles.
When standing it makes a loud creaking noise.
When I installed it I used a torque wrench so I don't think any thing is loose.
It could be the eccentric, I have not taken things apart to investigate yet.
I know FSA isn't known for being super reliable so it could the bearing is already failing.
Another issue is the crank spacing. Since this bike has a 145mm rear wheel vs. 160mm on our Santana I thought the cranks would be closer together. I measured them and compared to my road bike they are 20mm further apart which would be about what the Santana was. I am finding it feels awkward and may be aggravating some knee pain.
For some reason it never was a problem on the Santana. I am thinking about replacing the FSA crankset with a standard Ultegra installed backwards with Helicoils to reverse the pedal threads. This was an idea I had when building the bike but opted to go with FSA so I would have a perfect chain line. But now i think my knee comfort is more important than the chain line. My understanding is that the timing chain can have lots of offset without it being a problem since it is much longer than the rear which of course works with plenty of offset.