how to tighten thread on the valve lash adjustment screw

I got replacement adjuster screws and lock nuts from Summit Racing for my 65 Dart. But I ran into a problem when I put the stock valve covers on and the adjuster screws hit the baffle inside the valve cover. Thicker valve cover gaskets solved the problem for me, but you could also drill holes in the baffle to make room for the screws.

Curious to hear if something can be done to the threads to make them tight again.