I have a TruVativ Crankset and my wife bought me a FSA crankset for xmas. I tried to put the new FSA on and it appears to me that the BB is too wide. From what I have found it looks like there is a 68mm and a 70mm width. Is that correct? If so I would guess that I have a 68 and she bought me a 70. I figured if that is the case, I'll just add another spacer, I'm up to a total of 4 now. So I did and it fits, but it appears now that the crnaks have some kind of bind on them, they sdont spin free, feels like there is drag from tightning the crank arms down to tight? Could it be that or is it the fact that I can't use a 70mm where I sould have a 68 with spacers. I am not sure what the hell is going on so any ideas are greatly appriciated.