prop and spinner balancing
 

hey everyone just curious about this issue...........been flying for years and never bothered much with this but lately i have had to modify some spinners to fit 120 size props and i really want to balance them, and my blades. I have a dubro balance and i have tried props and spinners but with not much success.
When i balance the prop one way and flip it over it will rotate all the way around to were i just had it and balance again, which i guess means that width wise one side is heaveier than the other how do u fix this issue? and for spinners i try balancing them but using a drill and making little golf ball dips on the drooping side, but it never seems to work
and in my opinion im getting too much vibration with my 120 4 stokes