I just picked up a demo frame and fork online which came with Columbus integrated headset and carbon steerer. I feel pretty good setting preload but I'm not sure how much to tighten clamp against steerer tube. I haven't been able to find any specs online. I may just haul it down to the shop and pay a shop fee for a little setup and education, again. Any feedback from you fellow riders appreciated. I always feel like a schmuck hauling bikes into shop they know I bought online, but second hand is the only way to buy anything half decent on my puny budget. Thanks for looking!