I am very sorry about you not recieving any of our replies, but I have replied to you both times, with the first being on 6th Jan, and the second on 11th, but it seems you did not recieve them. Perhaps you should check your email filters, or they went to your junk folder for some reason: Below is my first reply. But essentially just send the item back and we will replace it with perfectly balanced one., or give you a full refund.
Sorry again about our emails not getting through, but not sure why that is as have not had this issue before?
But on a side note, these prop balancers often need a bit of tweaking in order to get them balanced, so you just need to use a file and balance each aluminium nut one at a time and file off the side that is heavier.