Yaw left stick has some jitter. You can either live with the issue as it or replace the left gimbal.
This item is sold “as is”. We will not offer any additional support for this directly. You are welcome to contact the manufacturer for further support, but this will be at their discretion and may require you to ship the goods directly to their factory. You will have 7 days to return the item as a change of mind return, assuming it is in the same condition you received it in (We will not refund shipping costs). While we try our best to test the item and describe it as is, please note that we have not completed a complete evaluation of this product to confirm every feature, and function of this unit works. Please note that original parts/accessories may be missing, unless we explicitly mention in this description that they are included.