Near the rear of the manifold you can see the stud pictured that needed to be modified. The stud was too long and there was no way to tighten it with any tool I had. So I used the same hacksaw and all I did was remove the very tip where the Star point is and from there i was able to get a box end 14mm on it an tighten it. If the stud ever needs to be removed you can always use a stud extractor and it should come right out.