I'm building a bike from parts for the first time to learn how everything goes together to do all my own maintenance and because I enjoy building things. I picked up a Campagnolo UT Carbon Centaur crankset from Bonktown for $199 and installed it this morning. I had the right tools and the frame was faced by the builder, so it seemed straight forward. BB installed no problems. I got the cranks in and torqued the center bolt to the required spec, but had about 1/8" play between the two arms. Not good. I thought maybe I had the retaining clip in the wrong place and that was keeping the splines from meshing, so I pulled that out and retorqued and still had play. I had horrible thoughts like maybe my BB shell was too wide, but I looked at the instructions again and realized my mistake. I had put the center bolt in from the wrong side! Doh! I unscrewed it from the non drive side and reinstalled it in the drive side, torqued it down. Solid as a rock now...Phew!
I also got the headset installed this morning without problems. The shifting system is going to be the real adventure!