fins were to the ones next to the holed fins as I was trying to use the bulk size of the holed fins to hold my flat head screw driver. the other two times I had the face plate off both times I used my impact and never had to brace against the fins but impact was not available today so I just went with tried and true armstrong. So I guess I'll just break off the fins 180' from the broken ones to balance out the face plate.