[Ratters]

What tends to happen is the factory hop bar heavily indents the hop rubber depending on it's degree, reducing the amount of sustainable pressure across the top of the hop rubber.

The easiest solution would be to use a maple leaf hop rubber and the "I' key with factory bar. It will provide a solid downward pressure.

A small piece of thicker gas-fitter tape across the top, not wrapped, will also reduce how far the pressure fingers penetrate into the bucking dents, essentially shimming it in a way that still applies the same downward pressure to the same two spots and doesn't deform the rubber. Don't over do it.

You can also try picking up ONLY the "I" key and trying it with the stock rubber as a test platform before buying another bucking.

Set it, shoot it and let us all know how it works for you.