I had a problem getting the control column to move freely. When built correctly, there is almost no friction and mine was sticky no matter how I adjusted the shims.
I discovered that while back riveting the bearing bracket assembly, I had accidentally positioned the backing plate under the bearing and slightly marred the bearing surface. I didn't realize this until I tried shimming and could not get the assembly to move freely.
The solution was painful- I had to remove the cover rib to gain access to the bearing bracket assembly and then disassemble it. When I removed the bearing, it was stiff when I tried to move it with my fingers and on closer examination I found some scoring on the bearing surface.
Remove the control column and try moving the empty bearing with your fingers- it should move absolutely freely with no catching.
Here's my build log writeup:
http://www.smashsrv-14build.com/2016/08/section-29-hours-5-after-finishing-up.html