How to tweak proline strong flat fronts for strength

[Taylor]

I am having trouble, I have one box of the new prolines, flat front, but I can't get any strength out of these. Can anybody help me? I have been squeezing with heated pliers, and then clipping the prongs down slightly. The bases have been getting blown out by a 4.0 ttc with no back prongs, just an ITZ dial in it.

Any help, I may post pictures in a bit.

Thanks,
Taylor