anyone else had problem with the grip screws of the bars getting loose too easy? i noticed this happens because of the gap in the inside parts that drive the attachment of the bars with tophandle, allowing small twists thus loosen the screws.
Gimbal is somewhat useless as its unstable with loosen bars...risky too if they unscrew too much.

Yes, on the right side I have noticed it. I finally was able to tighten it up but it took much more twisting than normal.

Same problem here.  You can somewhat fix it by putting some thin tape on the ends of the top bar arms, with a bit extra so it folds over the sides into the 'indent' part.  This will stop the arm wobble, and that stops the locknut from gradually loosening up.

Dear Customer,

Please kindly send a video of your issue to yi.zhang@dji.com
we will help you handle it, THX~


Best Regards!
Cathy

@not2slimjim: exactly what i did too...i used industrial coating (teflon) to fill the gaps of the inner parts somehow (cross passing and wraping the coating). But still the rods twist and getting loose too easy again...not as much as before tho. Removing rods and putting them on again will damage the coating even more, turning it useless. Anyway the idea behind the '3 turns lock' thing is that the two parts are supposed to be 'twist locked' from the inner drive parts. There is some bad calculations from the mechanics on that thing.

@DJI-Cathy: Sure thing.. will send video as soon as i get to the office. Already mailed DroneLand & DJI support europe but i got no answer yet.