Did you recently set this plane up? I'd make sure the endpoints on throttle are correct, to make sure you're actually sending full throttle signal at full stick. I've been known to do that before......
It does, that's why I got a red one.
Actually, 6S flies better...no question, yellow or red!
That's probably the route I'll eventually take with this plane. 6s and one of the lower kv winds of the Motrolfly 4315 should be pretty nice!