Yes, Tq for your guide. I'd finally found my receiver got supported with Channel 16 and I proceed to to rebind from Channel 9 to 16 through my Radio.
When I proceed to move my pitch stick and It will see the pitch moving around in my Betaflight, but there is problem when I move my pitch in real life drone flight, It seems to be really hard and I always ended up to be drift on other side.
That is why I'd trying to adjust my "Radio's Output" to have yaw, pitch, roll with middle's endpoint set to 1500 along -70 % and + 70 % (Suit to me as beginner to behave press commonly the stick but actually produce lower 70 % output than actual 100 %).
Besides that, I set my throttle starting from minimum 1000 endpoint (Betaflight) and Middle equals to 1500, but highest only 1971.
FYI, My betaflight must set with AETR1234 
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BTW, Do you have any other way to prevent the quad from always sudden drifting down to other side as I already trimming under my Radio's output, of cause I'm also cabled tied my low ESR capacitor with battery strap and put my power wires cable tied together with body of frame.
