Shepherds Hook Pressure Bar Placement(Sheaffer Balance

[RayCornett]

I have replaced lots of pressure bars in Sheaffer Balances but a couple of years ago I obtained one with what I have since discovered is called a Shepherds hook pressure bar.

The original was horribly corroded so I removed it hoping to perhaps clean it up but the corrosion was too far advanced and the small bit that makes it not just a J bar broke off.

I recently obtained a NOS replacement and sought advice on how to place it. I was told to get the bar started into the slot in the end of the barrel then lift that tab with a strong dental tool and lift that "tab" into the slot. Well, that tab seems to be caught on the lip of the slot and no dental tool I have is moving it.

I am open to suggestions.