RE: Tuning help
The 2312 is a little weaker shaft, so that might be the root of the problem. You don't say how long of any arrow you are running, but one solution might be to shoot a shorter arrow shaftin the 2312 - which will effectively stiffen it. I have a 29 3/8" draw length, but can easily shoot 27.5" shafts due to the arrow rest being positioned at the back of the sight window.