My Notos does not shoot decent (5) shot groups at 25 yds until the air tube PSI gets down to around 2,600PSI. It then shoots (5) shot groups of around .5". Above the 2,600 PSI it throws quite a few flyers. The speed when it's above 3,000 PSI is around 740 fps. At 2,600 PSI the speed is just...