Is an fps decrease normal when upgrading to a flathop setup? I have a Prometheus purple flathop setup in a prowin and another Prometheus purple flathop setup in a maxx pro. Both with a 6.03 barrel. I experimented with different nubs, bb weights, and putting the barrels in various aegs and hpa guns. Even with zero hop, the fps is still low. I was running a normal Prometheus purple bucking setup before. The only thing I changed was flathopping the bucking and adding a new nub. Both setups dropped in fps after changing from a normal hopup to flathop. How could I avoid this?