Hey guys, i've been wanting to beef up my CA Aug. I am getting the phantom kit and a longer tightbore for it. Do you guys have any tips for ROF? Its steady at about 15 or so currently with the 8.4 and ive tested it with a 9.6 and achieved around 20. The only problem is that the battery does not fit . Do you guys know of any batteries that could beef it up ROF wise without harm to the internals? I am worried that I am not skilled enough to open the GB so I am not planning on doing that. Also, if I do, how hard would it be to dis-and re-assemble the GB and to reshim it? I would like it to sound a bit smoother if possible.