A machine with a drop in or horizontal bobbin is not the best choice for FMQ. The thread has to 'turn a corner' so to speak coming off the bobbin. This can cause all manner of issues. Take comfort in knowing it isn't you.
I know there are some who FMQ just fine on a horizontal bobbin machine and I'm not saying it can not be done with plenty of practice. It just isn't the best tool for the job.