It's a pro where it's hard-mounted. I haven't moved it. It's an older kit, possibly an original. I've read that the older ones had mechanical issues with the tail while spun up, and some folks converted the tail to fix it (not sure if it was a newer tail kit... in some cases I read that people flipped the tail blade grips or something like that).
I set it up such that the 'pitch control' is centered on the shaft while the servo is at 90. And then try it in rate mode test flights. It spins nose left pretty bad right away. So I did as others on the thread said, and extended the push rod length to give it some right rudder (slides the pitch control to the right if you look at the heli from behind). I did that until it was about in the position I showed above... about 2/3rds the way across the slider. At that point it almost holds straight ahead. HH mode will hold steady, but not when I give it any kind of pitch bump. It clearly doesn't have enough right rudder to hold itself properly. Something is wrong... seems like there's excessive torque coming from somewhere.
I have to wonder if I do have that older kit. When I watched Tony's videos, the slider moves the opposite direction on his tail for the correction direction, while the tail blade work the same (correct direction).