I AM FLYING A WORLD MODELS TAI JI 60 RUNNING A HATORI FLEX HEADER PIPE INTO A HATORI 60 PIPE FUEL IS 15% MACH 7 FULL SYN. PLANE IS ABOUT 8 1/4 LB DRY GIVE OR TAKE 1/4 LB FOR CHEAP SCALE

I STARTED OUT WITH A 14X10 GETTING ABOUT 8300-8400 RPMS
THEN WENT TO 13X10 9300-9400 RPMS


I AM NOT GETTING THE VERTICAL THAT I WOULD LIKE STRAIGHT AND LEVEL IS GOOD LITTLE FAST THOUGH

WHAT PROP WOULD GIVE MORE VERT PULL AND CONSTANT SPEED THROUGH INTIRE PATTERN WITHOUT OVER REV. THE MOTOR


THANKS,GARY