Chris,

What is the difference between the stem on the Expert and Comp? The description reads like it is more adjustable but I don't understand 6061 faceplate with cone head bolt and plastic clip, 12-degree, w/4-degree shim.

Is there anyway to upgrade the stem on the Comp to the "Aero Stem" that is on the Pro?

How much of a difference in aerodynamics does the stem make between the three versions?

Thanks,

Jason