I'm putting in a new gas tank in my '85 westy.

1) I want to replace the lines going to the expansion tanks.  The tube
coming off the tank appears to be 6.5 mm in diameter, is that right?

2) Will 1/4" inner diameter fuel line work for this?

3) Why does the stock system go cloth-covered->plastic line->cloth-covered?

4) Is there any reason not to just do the whole run in one line of flexible
hose?

5) Is it to protect from rubbing a hole in the line?

6) If so, would wiring loom serve that purpose?

(Numbered the questions in case anyone wants to refer to a specific one.)

Thanks!

mike