I am tuning my new 22 Avenger. I am trying to tune for shot count. I am pressurizing the gun to 300 bar. I have the regulator set at 1100/1200. I have had the hammer tension set from zero turns to two turns. I am shooting Crosman CPHP, 14.3 pellets. I have seen an ES of 20 or so for these kinds of shot counts. What do I need to do to improve mine? Can I improve mine?