I had the problem mentioned in #4 of [MENTION=63821]markjenn[/MENTION] 's post. My new stem had a 5mm shorter stack height. Without more/different spacers it would have not been possible to get it right. Another thing is if it's a CF steering tube, over tightening could become deleterious. I'm a little weary of clamping on CF tubes and did buy a torque wrench to use when assembling my CF bike. I picked up a beam type that was recommended by members here for less than $20 shipped. I consider it one of the necessary tools for wrenching on a CF bike.