tank

Guys, Just finishing my build on a 2007 LTR. I've have new valves, cyclinderworks big bore, PC5. Just have to change the oil. Well I'm missing a hose. There are 2 hose intakes on the top of the gas tank one for the gas line and another that I can't find anywhere in diagrams on what it is or...

so, ive had my LTR for 4yrs and now i began to see issues with rough starting so i decided to go and splurge and spend 49 dollars on the swirl filter ! i figured out how and where it is after making a mess with gas everywhere and replaced the spark plug too since i hadnt done it ever ... and...