The rules require it on all fuel lines. I've never used it, so just want to be clear about what it must cover. I have a gravity fed line from the tank to a banjo at the bottom of the 1st carb, then a line to another banjo at the bottom of the second carb, and then from there back up to the tank to the reserve valve. Do the banjos and connectors at the tank need to be covered too, or just the actual fuel line from fitting to fitting? Thanks.