I bought a used tunnel ram for bbc and can not figure nout how to get the linkage to opperate the butterflies all the the way open.It has 2 850's mounted sideways .the linkage looks to be an expensive unit,it is made out of anodized aluminum rods with heim joints to pivot on .Was wondering if anyone had a linkage like I am describing and could post some pictures here of how yours is set up so i can figure out how to mount my throttle cable and make likage work would be greatly appeciated.I don't have a scanner or digital camera so I can't post a picture unless i find one to borrow.