[IIBAD4U]

What's the correct way to install oil galley plugs, the press in type. I had one on my 5.0 that worked it's way out, when I tapped in another one, it was a pain to get in, but once it was in, it slipped right out. So I'm doing something wrong. I thought the correct way was to tap it in on the outside edge with some sort of tube exc...

I just don't know what to do...