I recently bought a Feiyu Tech MG gimbal camera stabilizer, and I nearly returned it as I endured the tortuous balancing process--a process that could have gone smoother had the cryptic manual been better. Even after watching a couple YouTube videos, I still couldn't get it to work properly. The motors made an nasty grinding noise shortly after turning it on. I thought it was broken.
Long story short, it wasn't. The camera must be near-perfectly balanced so as not to strain the motors, and there are 4 locations to adjust. These 4 locations are indeed covered in the manual; however, with its non-native English translation and tiny graphics, that manual haunted my restless slumber over a 3-day bout. The YouTube videos helped a bit, but they didn't cover all 4 locations--a tragic flaw. So here are the 4 places you must adjust the balance.