I'm fine using trim in every other DCS 'copter I have - Huey, AH-64D and MI-8 but I cannot seem to trim the Chinook for level flight above 140 knots or so or around >50% throttle. When I'm less than 140, I use the CD REL around the attitude I want and then adjust with trim hat, everything's great. Above 140, I do the same and the aircraft pitches hard in the direction I am trimming - if I'm trimming down, it does a nose dive; trimming up it goes nose high. It will stay in trim at a climb rate of ~1k, this gets worse the more power is added.
If I just use my joystick, I can find a position at that speed where I am level with out many micro adjustments, but as soon as I hit CD REL, it pitches.
I've about tried everything at this point: instant vs center trim, holding and releasing vs pressing trim when in position, various combination of trim hat and CD REL etc.
EA bug or am I not understanding something about the 'copter/flight computer? Thanks for any assistance