[smokeonthewater]

Funny you should mention George. I'm aware of him from an unrelated forum. I did email him previously about this situation but I should give him a buzz.

If nothing else, I may try hitting down the center of the passage with a sharp punch to see if it really is a cap plug. What's the worst that could happen? -- Yeah, on the other hand, maybe I better talk to George first. I appreciate very much the comments from other members.

Eric