The default OS 75AX power curve is wrong... it reflects what OS claims in their advertising, but that is highly unrealistic.

Leave the AV as I posted with the SuperTigre setup, it is identical to the 75AX performance, rename the ST75 to OS75AX_Realistic if you want....

Also note the prop I'm using... that's the best combination I've found for the Stik in real world testing of various props on a 75 engine for that Stik.

BTW: My real world Stik/wST goes from a crawl to a decent fast speed, but it is not a rocket. On the other hands my take-offs are straight up and I have no problems torque rolling my Big Stik...