DM11 velocity issues-Need Help!!!
Ok my DM11 shoots ropes at about 275-285 fps for about 200-300 shots and then the velocity just drops and maybe shoots in the upper 100s. I rebuilt/cleaned/lubed the bolt twice with brand new o- rings, adjusted the lpr/hpr apropriately, adjusted the dwell, cleaned/lubed the hyper 3. it has a fresh duracell 9 volt along with being at factory settings. I have even tried my NT11s hyper 3 and still the same issue. I use a ninja grey ghost/ medium pressure ninja reg so it is not the tank. Any help????