CSpaced

Its also a good time to check your phasing. If you position your flybar left to right across the heli and give it elevator input your blade grips shouldn't move at all. If they do move (make sure you aren't giving aileron input) then the phasing is out. This will cause things such as uneven rolls and for the heli to pull left or right if you flip it.

To fix it, simply losen the washout (that thing with the two guide pins) and rotate it slightly one way or the other until you have no movement on your blade grips when giving elevator input. Once you've found the sweet spot, just tighten it back up and you are good to go.