jdawginsc - if you are referring to the top cap from post #16 of this thread, that "growth" is mainly a place holder as I was setting up the fork plug and pre-tensioning the headset bearings. That bike is a Klein Quantum with a 1" threadless fork. I'm gonna need to finish that bike, road test it, and cut the steer tube down. I do like those faceted/knurled spacers that I got from Velo Orange so I was playing around with those.
The new titanium stem I am reporting on is going to go on the Cannondale Six 13 (see reply #27 to this thread) in place of the white "35" Deda Trentacinque stem that is on there now. I am pretty impressed at the short turn around time of these Chinese stem/seatpost makers and their willingness to do "custom" mods to their designs for small upcharge.