Door Striker Adjustment Maxed Out?

[LukeC10]

I just installed new weather stripping on inner door areas and now the back side by door handle of both doors stick out over 1/2-3/4" from the cab. I loosened the door lock Strikers and adjusted them towards the inside of the cab, but they both barely moved before being maxed out. If I put pressure and push the doors in they line up perfect, so all I need is the striker moved another 1/2-3/4 towards the cab interior.

All I can think is to drill out the striker hole more to give more adjustment, has anyone ever done this?