I would certainly agree with returning something that isn't right, or made right by the place you purchased it....
The rest of this is unrelated to that subject or any recommendations ( since I don't do multicopters ) ... This is about how to use forums such as this one more effectively.
If you already have a thread that you made previously talking about this subject, post back for additional comments etc in that same thread. That way, whatever was discussed can be re-read to refresh anyone's thoughts before they make further posts. As it is now, they will not have any reference without first searching the forum for an older thread that you may have been talking about this stuff in. It helps you get better info and the person trying to help doesn't have to work as hard to do that. You didn't post anything wrong, just making a new thread makes it harder on others that may have something to add to it or to answer your queries.