I've been reading with avid interest the experience of those who have built before me. As I'm working on my wings for my Savannah S, I have been noticing the posts regarding upgrading the fuel lines to avoid fumes in the cockpit. I gather that older kits have rubber fuel lines in the wings, with my new Savannah S kit, the fuel lines are aluminum tube with very short rubber hose connections. Has anyone built with this material? How are the fume issues with the latest material in the new kits? (solid tube lines). I haven't gotten to the point yet where I know what to do with the corrugated fuel lines...