Valve cover pin hole oil leak

[GPierce]

I just installed a full flow oil filter kit. On startup I noticed oil leaking below the filter. Thinking it was the filter I tightened up a little more. No help
Crawled under and here is what I found. I can get a piece of 0.040 safety wire about 1/4" up in the hole.
I Need to drive the Model A this weekend.
If I had a gasket I would just put the original valve cover back on.
Ideas on a temporay fix?
JB Weld?
Drill a small hole, thread it put a screw in it?
Other ideas?????