I have been trying to achieve a complete pass thru on shots but unable to do so andthe last two deer I took were shot at only 20-25 yards. I am thinking there maybe something wrong with setup but I am not sure what. I am shooting a Switchback set at 60 lbs and 28" Draw. Drop Zone Rest, Easton A/C Super Slim 400 (9.7gpi) cut to 27" with 4" feathers. The broadheads were 100gr Crossfire (fixed)and 100gr Tekan (mechanical). I think it may have something to do with either my arrow setup or maybe a tuning problem. Though I have bareshafted tuned and paper tuned at various distances with my field tips, I have not paper tuned with my broadheads. When practicing with my broadheads they are right on target so I have never thought it was necessary. I sure would appreciate any advise or thoughts? Are they any statistical ratios or rules of thumb to consider when determining proper bow and arrow set? Thanks Again!