I dont know about the rest, but in my case , i have not. the motors are marginal at this weight, so not sure that i could
The fronts are running 10 by 3.8 apc's so swapping to some 10 by 4.5 epp's may be worth a go.
I think my previous vtail, in my first video, flew faster with less power, i had the front and rear motors angled forward at 30 deg, so when flying forward, she was level = less drag (looked funny when hovering)