The bushing that goes through the bellcrank attached to the angle brackets needs to be reamed out to 1/4". I got this reamer for the job. I hardly had the bushing in the vice and the reamer just went in and did a nice job. All holes in the bellcrank need to be drilled out. Other bushings need to be cut to length and the thing assembled. Took a bit to figure whats what with these guys. I put in place but didi not tourqe any nuts. I figure later it will have to come out to install the auto pilot servos.