Thanks Gentlemen,
I have enough input here to make a decision. I did like the procedure from "pompebled". I would have made the hole first, then soldered the tube. His ideas to drill afterwards makes good sense. Also .... I remembered the selection of plastic vacuum caps for auto vinyl lines and carbs that I have in the garage. I think I have some real small caps. Again ..... thanks to all.
sloboat. ..... Bob in Indy