I flew my Widebody with the MK bellcrank for the past 3 days. The bellcrank does have limited travel, but the major thing that I am unhappy with is the larger clevis holes. I'm using Dubro kwik clips with the safety clip, and the diameter of the bellcrank holes are too large. It allows slop.

There is another bellcrank available, and it looks almost exactly like the MK only it is yellow. Try: http://www.nbengineering.net/accesories.htm
The price is $25 and uses two threaded bolts instead of one.