I HAVE MY FUNJET SETUP WITH AN HET 2W25 MOTOR ON 4S2200 OR 4S 4400 PACKS,I MOVES WELL BUT ITS NOT AS FAST AS I WOULD LIKE IT.I THINK IM GONNA RUN IT ON A 5S 3300 PACK WITH A 5.5X4.5 PROP,LEMME KNOW WHAT U THINK,ALSO WHERE CAN I BUY SOME 4.75X.4.75 PUSHER PROPS AT?