I had the tight throttle cable problem also. All I had to do was move the cables to the top side of the big blob of wiring harness on the front of the frame...
Problem went away.
I spent more time rigging something up to suspend the bars from the ceiling in the garage than I did installing the spacers. Once the rigging was done, it was a 17.5 minute job. (15 min. for non-smokers....)
