i bought a pizazz to replace my ultra stick 40. a thunder tiger pro 46 with a macs pipe would pull the us 40 out of sight. the pizazz is a little lighter. the tt pro 46 w/ pipe and a 11-7 prop on the pizazz would hardly pull any vertical. i guess because of the thicker wing. i tried a 12.25 - 3.75 prop and got better vertical but still not enough. i put a mds 58 in the pizazz and it hovers at 5/8 throttle. i would like to try a saito 72 in it. i would definately use more than a 46, perferably a 60 . i had to add alot of down thrust to the engine. it would climb like crazy at full throttle, 2 washers under the rear mounting holes on the engine cured that problem. that was after i almost crashed it on the first flight when i couldn`t keep the nose down, i don`t know how i got it back down safely? added 1 washer & tried it again & got almost the same effect. now it flys good. even with the 58 in it, it needed nose weight, so rear mounted servos might be a good idea. its a real fun plane to fly, it takes off fast with the 58 in it & it really slows down to land. i put as much throw on the control surfaces as i could get on them , cut them down with dual rates and used the expo. suggested in the manual. the expo. really helps me fly it. i hope this helps you . have fun
conk